Human pathology

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rectal polyps

Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Rectal juvenile polyp Rectal juvenile polyp

Abcess

Subcutaneous abcess Periappendicular abcess in appendicitis Cryptic abcess in active Crohn colitis Cryptic abcess in active Crohn colitis

accessory tragus

Accessory tragus Accessory tragus Accessory tragus Accessory tragus Accessory tragus

actinic keratosis

active colitis

Cryptic abcess in colonic Crohn disease. Cryptic abcess in colonic Crohn disease. Cryptic abcess in active colitis (Crohn disease)

acute alveolitis

Acute alveolitis in acute baterial pneumonia

acute appendicitis

Acute appendicitis Acute appendicitis Perforated acute appendicitis Acute appendicitis Acute appendicitis Acute appendicitis Acute appendicitis Acute appendicitis Acute appendicitis Acute appendicitis Local peritonitis in acute appendicitis Local peritonitis in acute appendicitis Acute appendicitis Acute appendicitis with fecalith Destruction of appendiceal wall in an acute appendicitis Periappendicular abcess in appendicitis Acute appendicitis Acute appendicitis

acute bronchopneumonia

Diffuse acute bronchopneumonia Diffuse acute bronchopneumonia Diffuse acute bronchopneumonia Diffuse acute bronchopneumonia

acute chorioamnionitis

Acute chorioamnionitis Acute chorioamnionitis Acute chorioamnionitis Acute chorioamnionitis Acute chorioamnionitis Acute chorioamnionitis Placenta in acute chorioamnionitis Placenta in acute chorioamnionitis

acute chorionic vasculitis

Acute chorionic vasculitis Acute chorionic vasculitis

acute glandulitis

Acute colonic cryptitis in Crohn disease Acute colonic cryptitis in Crohn disease Cryptic abcess in Crohn active colitis

Acute inflammation

Acute inflammation with granulocytic diapedesis in ileal Crohn (...) Acute inflammation with granulocytic diapedesis in ileal Crohn (...) Acute inflammation with granulocytic diapedesis in ileal Crohn (...) Acute inflammation with granulocytic diapedesis in ileal Crohn (...) Acute inflammation with granulocytic diapedesis in ileal Crohn (...) Periappendicular abcess in acute appendicitis Acute colonic cryptitis in Crohn disease Acute colonic cryptitis in Crohn disease Cryptic abcess in colonic Crohn disease Cryptic abcess in Crohn active colitis

acute lymphoblastic leukemias

ALL: diffuse infiltration of bone marrow by lymphoblasts

acute peritonitis

Local acute peritonitis in acute appendicitis Local acute peritonitis in acute appendicitis

Adenitis

Mycobacterial adenitis Mycobacterial adenitis Mycobacterial adenitis Mycobacterial adenitis with cutaneous fistula

adenoids

Adenoids Adenoids - CD20 immunochemistry Adenoids - CD3 immunochemistry BCL2 immunostaining in adenoid

Adenomas

Thyroid macrofollicular adenoma Ovarian serous cystadenoma Parathyroid adenoma Parathyroid adenoma Parathyroid adenoma

adenoviral colitis

Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections

adenoviral digestive infections

Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection

adenoviral hepatitis

Hepatic necrosis in adenoviral hepatitis Hepatic necrosis in adenoviral hepatitis Hepatic necrosis in adenoviral hepatitis

adenoviral infections

Hepatic necrosis in adenoviral hepatitis Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections Adenoviral colonic infections

Adenovirus

Hepatic necrosis in adenoviral hepatitis Hepatic necrosis in adenoviral hepatitis Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral colonic infection Adenoviral inclusion in adenoviral cholangitis (Case 11613) Adenoviral inclusion in adenoviral cholangitis (Case 11613) Adenoviral inclusion in adenoviral cholangitis (Case 11613) Adenoviral inclusion in adenoviral cholangitis (Case 11613) Adenoviral inclusion in adenoviral cholangitis (Case 11613)

adipocytic tumors

Lower limb lipoma Lipblastoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma fibrous hamartoma of infancy (juvenile fibrous hamartoma) Fibrolipoma Fibrolipoma

Adrenals

Fetal adrenals above kidneys Adrenals in the neonate Adrenals (3 years)

Agenesis

Bilateral renal agenesis in a fetus Testicular agenesis (isolated and sporadic)

alcian blue

Alcian blue in embryonal rhabdomyosarcoma

ALK

ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor

alveolar hyaline membranes

Alveolar hyaline membranes in hyaline membrane disease Alveolar hyaline membranes in hyaline membrane disease Alveolar hyalin membranes in acute pneumonia Alveolar hyalin membranes in acute pneumonia

alveoli

Pulmonary alveoles

Alveolitis

Acute alveolitis in acute bacterial pneumonia Acute alveolitis in acute bacterial pneumonia

amnionitis

Infiltration of amnion by granulocytes in acute chorioamnionitis

anal canal duplication

anaplastic large cell lymphoma

angiolipoma

angiolymphoid hyperplasia with eosinophilia

anomalies of nephronogenesis

Nephronogenesis in embryonic kidney

anti-helminthic granulomatous reaction

Anti-helminthic granulomatous reaction

Apocrine glands

Cutaneous apocrine glands

apoptotic body

Hepatocytic apoptotic body Hepatocytic apoptotic body and cholestasis keratinocytic apoptotic body in cutaneous GVHD Hepatocytic apoptotic bodies in minocycline-induced hepatitis Hepatocytic apoptotic bodies in minocycline-induced hepatitis

appendiceal lumen

Mucus plug in appendix in cystic fibrosis

appendiceal mucosal ulceration

Mucosal ulceration in acute appendicitis

appendiceal perforation

Perforated acute appendicitis Perforated acute appendicitis

appendiceal tumors

Appendiceal carcinoid tumor Appendiceal carcinoid tumor

appendiceal ulceration

Acute appendicitis Acute appendicitis Mucosal ulceration in acute appendicitis

Appendicitis

Acute appendicitis: suppuration and perforation Acute appendicitis Acute appendicitis Periappendicular abcess in acute appendicitis Acute appendicitis Perforated appendicitis

appendix

CD20 in normal appendix CD20 in normal appendix CD20 in normal appendix CD20 in normal appendix

Arteriolitis

Cerebral fibrinoid arteriolitis Cerebral fibrinoid arteriolitis Cutaneous arteriolitis in dermatomyositis

arteriovenous malformations

Intestinal arteriovenous malformation Pulmonary arteriovenous malformation Cutaneous arteriovenous malformation Cutaneous arteriovenous malformation Leptomeningeal arteriovenous malformation Leptomeningeal arteriovenous malformation

Aspergillus sp.

Fungal cutaneous vasculitis in systemic invasive aspergillosis Fungal cutaneous vasculitis in systemic invasive aspergillosis

atypical salivary lymphoid hyperplasia

Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia Atypical salivary lymphoid hyperplasia

autoimmune hepatitis

Autoimmune hepatitis Autoimmune hepatitis Autoimmune hepatitis Autoimmune hepatitis Autoimmune hepatitis

axilary synovial sarcoma

BALT hyperplasia

BALT hyperplasia (HPS) BALT hyperplasia (CD20 immunolabeling) CD20 in lung: slight bronchi-associated lymphoid tissue (BALT) (...) Bronchiectasis and BALT hyperplasia (Case 11750) Bronchiectasis and BALT hyperplasia (Case 11750) Bronchiectasis and BALT hyperplasia (Case 11750) Bronchiectasis and BALT hyperplasia (Case 11750) Bronchiectasis and BALT hyperplasia (Case 11750)

basal cell carcinoma

biliary ductules

Dilated biliary ductules Neoductular proliferation after massive hepatic necrosis Neoductular proliferation after massive hepatic necrosis

biliary Langerhans histiocytosis

Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis Biliary Langerhans histiocytosis

biliary plugs

Biliary plugs in biliary portal ductules Canalicular biliary plugs Canalicular biliary plugs Canalicular biliary plugs Biliary plug in a pseudoacinar formation Canalicular biliary plugs

blastemal tumors

Wilms tumor Blastemal component in Wilms tumor Blastemal component in Wilms tumor Blastemal component in Wilms tumor Blastemal component in Wilms tumor Blastemal component in Wilms tumor Blastemal component in Wilms tumor

bone marrow lymphoid nodule

bone marrow lymphoid nodule Bone marrow lymphoid nodule

bone marrow metastasis

Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma

bone marrow metastasis

Juxta-trabecular metastasis of a neuroblastoma Juxta-trabecular metastasis of a neuroblastoma Juxta-trabecular metastasis of a neuroblastoma (synaptophysin)

bone marrow neuroblastoma metastasis

Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Juxta-trabecular neuroblastic nodule Juxta-trabecular neuroblastic nodule Juxta-trabecular neuroblastic nodule (synaptophysin immunostaining)

branchial remnants

Preauricular appendix in a malformative syndrome (Fetus, 20 (...) Cervical branchial cyst Cervical branchial cyst Cervical branchial cyst (CD20 immunostaining)

bronchial mucosa

Bronchial mucosa Bronchial mucosa

bronchial mucous plug

Mucous plug and bronchiectasis in cystic fibrosis Mucous plug and bronchiectasis in cystic fibrosis Mucous plug and bronchiectasis in cystic fibrosis Mucous plug and bronchiectasis in cystic fibrosis Mucous plug and bronchiectasis in cystic fibrosis

bronchioles

Bronchiole

bronchiolitis obliterans

Bronchiolitis obliterans after bone marrow allograft Bronchiolitis obliterans after bone marrow allograft Bronchiolitis obliterans after bone marrow allograft

brush border

PAS in microvillous inclusion disease PAS in microvillous inclusion disease CD10 in microvillous inclusion disease

brush border lesions

PAS in microvillous inclusion disease PAS in microvillous inclusion disease CD10 in microvillous inclusion disease

Burkitt lymphoma

Ileal Burkitt lymphoma Ki67 in Burkitt lymphoma Ki67 in Burkitt lymphoma Ki67 in Burkitt lymphoma Ki67 in Burkitt lymphoma Kappa-Lambda light chain immunochemistry in Kappa Burkitt lymphoma

calcified tumors

Pilomatricoma Pilomatricoma (pilomatrixoma)

calcifying aponeurotic fibroma

caliceal dilatation

Caliceal dilatations in fetal obstructive kidney (21 weeks) Caliceal dilatations in fetal obstructive kidney (22 weeks) Caliceal dilatations in fetal obstructive kidney (22 weeks) Bilateral caliceal dilatation Huge cystic dilatation of the upper calix in fetal hydronephrosis Huge cystic dilatation of the upper calix in fetal hydronephrosis Huge cystic dilatation of the upper calix in fetal hydronephrosis

canalicular cholestasis

Biliary plugs in canalicules Biliary plugs in canalicules

Candida adenitis

Candida adenitis in a neutropenic child. Candida adenitis: focus of necrosis Candida adenitis: focus of necrosis

Candida fetal pneumonitis

Fetal candida pneumonitis Fetal candida pneumonitis Fetal candida pneumonitis. Candida fetal pneumonitis

Candida sp.

Candida adenitis in a neutropenic child. Fetal Candida pneumonitis

capillary hemangiomas

Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma

cardiac tumors

Atrial myxoma Atrial myxoma

caseous necrosis

Confluent caseous necrosis in mycobacterial adenitis Cutaneous fistula of caseous necrosis in mycobacterial adenitis Confluent caseous necrosis in mycobacterial adenitis Confluent caseous necrosis in mycobacterial adenitis

CD15

CD15 in classic Hodgkin lymphoma CD15 immunolabeling in lymphocyte-rich classic Hodgkin lymphoma CD15 immunolabeling in lymphocyte-rich classic Hodgkin lymphoma

CD1a

Cutaneous Langerhans histiocytosis CD1a+ Cutaneous Langerhans histiocytosis Cutaneous Langerhans histiocytosis

CD20

CD20 positivity in a large cell lymphoma CD20 immunostaing in follicular lymphoid hyperplasia CD20 immunostaining of pulmonary follicular lymphoid hyperplasia CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in nodular lymphocyte predominant Hodgkin lymphoma CD20 in lung: slight bronchi-associated lymphoid tissue (BALT) (...) CD20 immunostaining of the spleen: lymphoid follicles of the white pulp are (...) CD20 immunostaining of a normal tonsil CD20 immunostaining in nodal follicular lymphoid hyperplasia

CD30

CD30 in classic Hodgkin lymphoma CD30+ macroscopical nodules in classic Hodgkin lymphoma. CD30+ macroscopical nodules in classic Hodgkin lymphoma.

CD68

CD68 immunostaing of the splenic red pulp (labelling of red pulp (...)

CD99

Ewing sarcoma: CD99 positivity Ewing sarcoma: CD99 positivity Ewing sarcoma: CD99 positivity

CEA

CEA in microvillous inclusion disease

cellular ballooning

Hepatocytic ballooning (ballooning hepatocytes)

cellular debris-laden macrophages

Cellular debris-laden macrophages in Burkitt lymphoma Cellular debris-laden macrophages in Burkitt lymphoma Cellular debris-laden macrophages in Burkitt lymphoma

Cellulitis

Post-chickenpox acute necrotizing cellulitis Post-chickenpox acute necrotizing cellulitis Post-chickenpox acute necrotizing cellulitis

central vein congestion

Central vein congestion

central vein stenosis

Central vein stenosis

central veins

Central veinulitis (central vein endothelitis) Central veinulitis (central vein endothelitis) Normal central vein Normal central vein Normal central vein

central veinulitis

Central endothelitis in hepatic GVHD Central endothelitis in hepatic GVHD Central endothelitis in hepatic GVHD Central endothelitis in hepatic GVHD

centrilobular cholestasis

Centrilobular cholestasis with giant cell transformation of (...)

centrilobular hemorrhages

Centrilobular hemorrhages after massive pulmonary embolies Confluent centrilobular hemorrhages in a complex cardiac malformation Confluent centrilobular hemorrhages in a complex cardiac malformation Confluent centrilobular hemorrhages in hepatic veno-occlusive (...) Confluent centrilobular hemorrhages in hepatic veno-occlusive (...) Confluent centrilobular hemorrhages in hepatic veno-occlusive (...)

centrilobular hepatocyte clarification

Centrilobular cholestasis clarification

centrilobular lesions

Centrilobular cholestasis Centrilobular cholestasis Centrilobular cholestasis Centrilobular cholestasis Centrilobular cholestasis

centrilobular necrosis

Confluent centrilobular necrosis in hepatic veno-occlusive disease Confluent centrilobular necrosis in hepatic veno-occlusive disease Confluent centrilobular necrosis in hepatic veno-occlusive disease

cerebellum

Brainstem and cerebellum Brainstem and cerebellum Brainstem and cerebellum (1 month) Brainstem and cerebellum (1 month) Normal cerebellum

cervical villoglandular adenocarcinoma

Cervical villoglandular adenocarcinoma

chalazion

Chalazion: Tuberculoid granuloma with central suppuration. Chalazion: Tuberculoid granuloma with central suppuration

cheloid

Hypertrophic scar Hypertrophic scar Cheloid Cheloid Cheloid hypertrophic scar Cheloid hypertrophic scar

Cholestasis

Cholestatis Portal cholestasis Cholestatic cirrhosis in extra-hepatic bile duct atresia Cholestatic liver Cholestatic liver Cholestatic liver

cholesteatoma

Cholesteatoma Cholesteatoma Cholesteatoma Cholesteatoma Cholesteatoma Cholesteatoma

cholesterol crystals

Cholesterol crystals within macrophages in CESD-Wolman disease

chondrodermatitis nodularis chronica helicis

chronic granulomatous disease

Chronic granulomatous disease: tuberculoid granuloma with central (...) Chronic granulomatous disease: Tuberculoid granuloma with central (...)

chronic inflammation

Chronic inflammation Chronic interstitial nephritis Cutaneous fistula complicating a chronic osteomyelitis Cutaneous fistula complicating a chronic osteomyelitis

chronic interstitial nephritis

Chronic interstitial nephritis Chronic interstitial nephritis Polar superior chronic interstitial nephritis in a severe vesico-ureteral (...) Polar superior chronic interstitial nephritis in a severe vesico-ureteral (...) Chronic interstitial nephritis Hydronephrosis with chronic intertistial nephritis Segmental renal dysplasia and chronic interstitial nephritis in (...)

Cirrhosis

Cholestatic micronodular cirrhosis in biliary tract atresia Micronodular cirrhosis in lysosomal acid lipase deficiency Micronodular cirrhosis in lysosomal acid lipase deficiency Consequences of cirrhosis Cirrhosis Cirrhosis Cholestatic cirrhosis in extra-hepatic biliary tract atresia Cholestatic cirrhosis in extra-hepatic biliary tract atresia Macronodular cirrhosis and hepatocellular carcinoma in tyrosinemia Macronodular cirrhosis and hepatocellualr carcinoma in tyrosinemia Macronodular cirrhosis and hepatocellular carcinoma in tyrosinemia Macronodular cirrhosis and hepatocellualr carcinoma in tyrosinemia Macronodular cirrhosis and hepatocellular carcinoma in tyrosinemia Macronodular cirrhosis and hepatocellular carcinoma in tyrosinemia

classic Hodgkin lymphoma

Hodkin lymphoma Classical Hodgkin lymphoma type scleronodular Bone marrow localization of classic Hodgkin lymphoma Bone marrow localization of classic Hodgkin lymphoma Bone marrow localization of classic Hodgkin lymphoma Bone marrow localization of classic Hodgkin lymphoma (CD30) Bone marrow localization of classic Hodgkin lymphoma (CD30) Hepatic localization of a classic Hodgkin lymphoma Hepatic localization of a classic Hodgkin lymphoma Splenic localization of a classic Hodgkin lymphoma Periaortic nodal localization of a classic Hodgkin lymphoma

CMV hepatitis

Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy Nuclear and cytoplasmic inclusions in CMV fetopathy

Colon

Colonic mucosa Colectomy in Hirschsprung disease

colonic cryptic destruction

Colonic cryptic destruction in focal active colitis

colonic cryptic fibrosis

Colonic cryptic fibrosis

colonic cryptitis

Acute cryptitis Acute cryptitis

colonic exulcerations

Exulceration of colonic mucosa

colonic GVHD

Colonic GVH Colonic GVH Colonic GVH Colonic GVHD Colonic GVHD Colonoc GVHD Colonic GVHD

colonic infantile myofibromatosis

Colonic localization of an infantile myofibromatosis Colonic localization of an infantile myofibromatosis Colonic localization of an infantile myofibromatosis Colonic localization of an infantile myofibromatosis

colonic mucosa

Colonic mucosa

colonic polyps

Colorectal tubulous adenoma Colonic juvenile polyp Colonic juvenile polyp

colonic ulceration

Colonic mucosal ulceration in Hirschsprung disease Colonic mucosal ulceration

colorectal adenomas

Tubulous microadenoma in FAP Tubulous microadenoma in FAP Tubulous microadenoma in FAP Colorectal tubulous adenoma Familial adenomatous polyposis (FAP) Familial adenomatous polyposis (FAP) Familial adenomatous polyposis (FAP) Familial adenomatous polyposis (FAP)

colorectal Hirschsprung disease

Colonic Hirschsprung disease Colectomy in Hirschsprung disease Colonic mucosal ulceration in Hirschsprung disease colorectal Hirschsprung disease colorectal Hirschsprung disease colorectal Hirschsprung disease

colorectal microadenoma

Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma Colorectal microadenoma

colorectal polyps

Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp Colorectal juvenile polyp

colorectal tubulous adenoma

Colonic tubulous adenoma Multiple colonic adenomas in familial adenomatous polyposis Multiple colonic adenomas in familial adenomatous polyposis Multiple colonic adenomas in familial adenomatous polyposis

combined nevus

congenital bronchiolar cystic dilatation

Bronchiolar dilatation Bronchiolar dilatation Bronchiolar dilatation Congenital bronchiolar cystic dilatation Congenital bronchiolar cystic dilatation

congenital fibrosarcoma

Herringbone pattern in a congenital fibrosarcoma. Herringbone pattern in a congenital fibrosarcoma. ETV6-NTRK3+ congenital fibrosarcoma ETV6-NTRK3+ congenital fibrosarcoma ETV6-NTRK3+ congenital fibrosarcoma ETV6-NTRK3+ congenital fibrosarcoma Negative desmin in an ETV6-NTRK3+ congenital fibrosarcoma HHF35 actins+ in an ETV6-NTRK3+ congenital fibrosarcoma Smooth muscle actin+ in an ETV6-NTRK3+ congenital fibrosarcoma Congenital fibrosarcoma

congenital hepatic fibrosis

Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis)

congenital melanocytic nevus

congenital melanocytic nevus congenital melanocytic nevus congenital melanocytic nevus congenital melanocytic nevus congenital melanocytic nevus

congenital pulmonary airway malformations

Congenital cystic adenomatoid malformation type IV. Macroscopy. CCAM type IV. Macroscopy CCAM type II CPAM type 1 CPAM type 1 CPAM type 1 CPAM type 2 (CCAM type 2) CPAM type 2 (CCAM type 2) CPAM type 2 (CCAM type 2)

corpus luteum

Corpus luteum

CPAM type 2

CCAM type 2 CCAM type 2 CPAM type 2 (CCAM type 2) CPAM type 2 (CCAM type 2) CPAM type 2 (CCAM type 2)

Crohn active colitis

Acute colonic cryptitis in Crohn disease Acute colonic cryptitis in Crohn disease Cryptic abcess in Crohn active colitis Cryptic abcess in Crohn active colitis

Crohn colitis

Crohn disease. Ileocaecal junction. Crohn ileitis Colonic Crohn disease. Cryptic abcess Acute cryptitis Colonic tuberculoid granuloma Colonic tuberculoid granuloma Two colonic stenoses Crohn colitis Crohn colitis Crohn colitis Crohn colitis Crohn colitis Crohn colitis Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Crohn colitis Crohn colitis Crohn colitis Crohn colitis

Crohn gastritis

Active focal gastritis in Crohn gastritis Active focal gastritis in Crohn gastritis Active focal gastritis in Crohn gastritis Active focal gastritis in Crohn gastritis

Crohn ileitis

Crohn ileitis Ileal ulceration in Crohn ileitis Ileal ulceration in Crohn ileitis Crohn ileitis Crohn ileitis (Ileal Crohn disease) Crohn ileitis (Ileal Crohn disease) Crohn ileitis (Ileal Crohn disease) Crohn ileitis (Ileal Crohn disease) Crohn ileitis Crohn ileitis Crohn ileitis Crohn ileitis Crohn ileitis Crohn ileitis Crohn ileitis

cryptic abcess

Cryptic abcess in colonic Crohn disease. Cryptic abcess in colonic Crohn disease. Cryptic abcess

cryptic apoptotic bodies

Cryptic apoptotic bodies in colonic GVHD Cryptic apoptotic bodies in colonic GVHD Cryptic apoptotic bodies in colonic GVHD Cryptic apoptotic bodies in colonic GVHD Inflammatory apoptotic cells in chronic colitis Inflammatory apoptotic cells in chronic colitis Inflammatory apoptotic cells in chronic colitis Inflammatory apoptotic cells in chronic colitis Inflammatory apoptotic cells in chronic colitis (Legends) Inflammatory apoptotic cells in chronic colitis (Legends)

cryptic necrosis

Cryptic necrosis in a colonic GVHD Cryptic necrosis in a colonic GVHD

Cryptococcosis

Cryptococcus neoformans in glomerular capillaries in systemic (...)

Cryptococcus neoformans

Systemic cryptococcosis

Crystals

Cholesterol crystals within macrophages in Wolman disease Cholesterol crystals within macrophages in Wolman disease Cholesterol crystals within macrophages in Wolman disease

cutaneous angiofibroma

cutaneous arteriolitis

Cutaneous arteriolitis in dermatomyositis

cutaneous dermoid cyst

Cutaneous dermoid cyst

cutaneous granulomatosis

cutaneous GVHD

Cutaneous GVH Cutaneous GVH Cutaneous GVH Cutaneous GVH

cutaneous leishmaniasis

Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis Cutaneous leishmaniasis

cutaneous lupus erythematosus

cutaneous lymphoid hyperplasia

Cutaneous B-cell lymphoid hyperplasia

cutaneous mastocytosis

Cutaneous mastocytosis Cutaneous mastocytosis Cutaneous mastocytosis Cutaneous mastocytosis Cutaneous mastocytosis Cutaneous mastocytosis Cutaneous mastocytosis Urticaria pigmentosa Urticaria pigmentosa Urticaria pigmentosa Cutaneous mastocytoma Cutaneous mastocytoma Cutaneous mastocytoma Cutaneous mastocytoma Cutaneous mastocytoma Cutaneous mastocytoma

cutaneous vasculitis

Fungal vasculitis in systemic invasive aspergillosis Fungal vasculitis in systemic invasive aspergillosis Urticarial vasculitis

Cystic fibrosis

Cystic fibrosis: mucus plug in appendix Intestinal cystic fibrosis Intestinal cystic fibrosis Bronchiectasis in cystic fibrosis Bronchectasias in cystic fibrosis Bronchiectasis in cystic fibrosis Bronchiectasis in cystic fibrosis Bronchiectasis in cystic fibrosis Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...) Bronchiectasis in cystic fibrosis and peribronchial inflammation in cystic (...) Mucous plug and bronchiectasis in cystic fibrosis and peribronchial (...) Bronchiectasis in cystic fibrosis and peribronchial inflammation in cystic (...) Bronchiectasis in cystic fibrosis and peribronchial inflammation in cystic (...) Mucous plug and bronchiectasis in cystic fibrosis and peribronchial (...)

cystic nephroma

Cystic nephroma Cystic nephroma Cystic nephroma Cystic nephroma Cystic nephroma Cystic nephroma Cystic nephroma

Cystic tumors

Ovarian serous cystadenoma Ovarian mature cystic teratoma Pulmonary giant cystic chondroid hamartoma Pulmonary giant cystic chondroid hamartoma Pulmonary giant cystic chondroid hamartoma Pulmonary giant cystic chondroid hamartoma Pulmonary giant cystic chondroid hamartoma Pulmonary giant cystic chondroid hamartoma

Cysts

Parasplenic cyst Cyst of the thyroglossal tract Cyst of the thyroglossal tract Cyst of the thyroglossal tract Cyst of the thyroglossal tract Cyst of the thyroglossal tract Splenic mesothelial cyst (open) Splenic mesothelial cyst (open) Splenic multilocular mesothelial cysts Splenic multilocular mesothelial cysts Thymic cyst Thymic cyst Branchial cyst Popliteal synovial cyst Tryroglossal tract cyst Nodal epidermoid cyst Nodal epidermoid cyst Nodal epidermoid cyst Popliteal synovial cyst Popliteal synovial cyst Ovarian endometriotic cyst Ovarian endometriotic cyst

cytomegalovirus

CMV cytoplasmic inclusions in CMV fetopathy CMV cytoplasmic and nuclear inclusions in CMV fetopathy CMV cytoplasmic and nuclear inclusions in CMV fetopathy

deep-penetrating nevus

dermal sinuses

Medial line dermal sinus Medial line dermal sinus Abcessed pilonidal sinus cyst Abcessed pilonidal sinus cyst

dermatitis herpetiformis

dermatofibrosarcoma protuberans

Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans Dermatofibrosarcoma protuberans CD34 immunostaining in dermatofibrosarcoma protuberans Negative SMA immunostaining in dermatofibrosarcoma protuberans

dermatomyositis

Cutaneous arteriolitis in dermatomyositis

dermatophytoses

desmin

Desmin immunolabeling of embryonal rhabdomyosarcoma Desmin immunolabeling of embryonal rhabdomyosarcoma Desmin immunolabeling of embryonal rhabdomyosarcoma

desmoplastic small round cell tumor

Peritoneal desmoplastic small round cell tumor Peritoneal desmoplastic small round cell tumor Peritoneal desmoplastic small round cell tumor Cytokeratin immunostaining Desmin immunostaining Desmin immunostaining EMA immunostaining EWSR1/WT1 fusion gene Ki67 immunostaining NH2-WT1 immunostaining

differentiating neuroblastoma

Adrenal differentiating neuroblastoma Differentiating neuroblastoma Differentiating neuroblastoma

digestive atresias

Duodenal atresia (22 weeks) Blind-end jejunal atresia Blind-end jejunal atresia

digestive congenital fibrosarcoma

Digestive congenital fibrosarcoma Digestive congenital fibrosarcoma Digestive congenital fibrosarcoma

digestive Crohn disease

Crohn ileitis Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Colonic stenosis in Crohn disease Digestive Crohn disease (Crohn colitis) Crohn ileitis (Ileal Crohn disease) Crohn ileitis (Ileal Crohn disease)

digestive cystic fibrosis

Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...)

digestive glandulitis

Acute gastric glandulitis with glandular abcess Acute gastric glandulitis with glandular abcess Acute colonic cryptitis in Crohn disease Acute colonic cryptitis in Crohn disease

digestive GVHD

Digestive GVH Digestive GVH Digestive GVH Digestive GVH Digestive GVH Apoptotic epithelial cell in esophageal GVHD Apoptotic epithelial cell in esophageal GVHD Apoptotic epithelial cell in esophageal GVHD Apoptotic epithelial cell in esophageal GVHD Apoptotic epithelial cell in esophageal GVHD

digestive lumen

Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...) Meconial peritonitis after fetal intestinal perforation in cystic (...)

digestive mucosal ulceration

Digestive mucosal ulceration in Crohn colitis

digestive mucous plug

Luminal mucous plug in appendix in cystic fibrosis

digestive muscularis propria

Smooth muscle actin labeling of muscularis mucosae and muscularis (...)

digestive perforation

Destruction of appendiceal wall and perforation in acute appendicitis

digestive pneumatosis

Colonic pneumatosis in infectious colitis Colonic pneumatosis in cystic fibrosis Colonic pneumatosis in cystic fibrosis

digestive tumors

Intestinal EBV-associated smooth muscle tumor Intestinal Burkitt lymphoma Intestinal Burkitt lymphoma

digestive ulceration

Digestive mucosal ulceration in Crohn colitis

ductal plate malformation

Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis)

ductal plates

Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis)

ductopenia

Periductal lymphocytic infiltrate in auto-immune sclerosing (...)

ductular reaction

Ductular proliferation after massive hepatic necrosis

ductular reaction

Neoductular proliferation after massive hepatic necrosis Neoductular proliferation after massive hepatic necrosis Neoductular proliferation after massive hepatic necrosis Neoductular proliferation after massive hepatic necrosis Neoductular proliferation after massive hepatic necrosis

Duplications

Intestinal duplication Colonic duplication Colonic duplication Colonic duplication

dysplastic nevus

EBV-associated diseases

Intestinal EBV-associated smooth muscle tumor Intestinal EBV-associated smooth muscle tumor

EBV-associated smooth muscle tumors

Intestinal EBV-associated smooth muscle tumor Intestinal EBV-associated smooth muscle tumor

EBV-associated undifferentiated carcinoma

echinococcosis

hydatid cyst (echinococcosis) hydatid cyst : laminated and germinal membranes, with protoscolices hydatid cyst : laminated membrane hydatid cyst : protoscolex and hooklets hydatid cyst : protoscolex with refractile hooklets Hydatid cysts in pulmonary echinococcosis Hydatid cysts in pulmonary echinococcosis

Echinococcus granulosus

Pulmonary hydatid cyst Pulmonary hydatid cyst Hydatid cyst: germinal membrane and scolices Protoscolex Protoscolex

ectopic pregnancy

Tubar pregnancy Tubar pregnancy Tubal pregnancy Tubal pregnancy

Ellis-van Creveld disease

Cholestatic cirrhosis in Ellis-van Creveld syndrome Portal fibrosis and ductular proliferation in Ellis-van Creveld (...)

embryonal carcinoma

Embryonal carcinoma Embryonal carcinoma Testicular embryonal carcinoma Testicular embryonal carcinoma Testicular embryonal carcinoma Testicular embryonal carcinoma Testicular embryonal carcinoma

embryonal hepatoblastoma

embryonal rhabdomyosarcoma

Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Vulvar embryonal rhabdomyosarcoma Parotidal emryonal rhabdomyosarcoma Parotidal emryonal rhabdomyosarcoma myxoid embryonal rhabdomyosarcoma (Orbit) myxoid embryonal rhabdomyosarcoma (Orbit) myxoid embryonal rhabdomyosarcoma (Orbit) myxoid embryonal rhabdomyosarcoma (Orbit) myxoid embryonal rhabdomyosarcoma (Orbit) Myxoid embryonal rhabdomyosarcoma (Orbit) Myxoid embryonal rhabdomyosarcoma (Orbit) Myxoid embryonal rhabdomyosarcoma (Orbit) Desmin in myxoid embryonal rhabdomyosarcoma (Orbit) Desmin in myxoid embryonal rhabdomyosarcoma (Orbit) Desmin in myxoid embryonal rhabdomyosarcoma (Orbit) Myogenin in myxoid embryonal rhabdomyosarcoma (Orbit) Myogenin in myxoid embryonal rhabdomyosarcoma (Orbit) Myogenin in myxoid embryonal rhabdomyosarcoma (Orbit)

embryonic kidney

Embryonic kidney

enchondromatosis

Osteochondroma Osteochondroma

endocrine tumors

Adrenal pheochromocytoma Adrenal pheochromocytoma

endometriosis

Subserous endometriosis Ovarian endometriotic cyst Ovarian endometriotic cyst

enlarged macrophages

Enlarged macrophages in liver in GSD IV. Enlarged macrophages in liver in GSD IV.

enterocytes

PAS in microvillous inclusion disease Enterocyte and intercellualr junctions

enterocytic diseases

PAS in microvillous inclusion disease PAS in microvillous inclusion disease

eosinophilic esophagitis

Eosinophilic oesophagitis Eosinophilic oesophagitis

eosinophilic granuloma

S-100 immunostaining in eosinophilic granuloma Myeloperoxidase immunostaining in eosinophilic granuloma

epidermoid papilloma

Laryngeal papilloma

epidermolytic hyperkeratosis

Epidermolytic hyperkeratosis Epidermolytic hyperkeratosis Epidermolytic hyperkeratosis Epidermolytic hyperkeratosis

epithelioid cells

Epitheloid cells in epithelioid granuloma (chalazion) Epithelioid cells in epithelioid granuloma

epithelioid dermatofibroma

Epithelioid fibrous histiocytoma Epithelioid fibrous histiocytoma Epithelioid fibrous histiocytoma

epithelioid granuloma

Tuberculoid granuloma with central suppuration Epithelioid cells in tuberculoid granuloma Epithelioid granuloma Tuberculoid granuloma with central suppuration in familial granulomatous (...) Tuberculoid granuloma with central suppuration in familial granulomatous (...) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002) Epitheloid granuloma in systemic granulomatosis (Case 12002)

epithelioid hemangioma

Epithelioid hemangioma Epithelioid hemangioma Epithelioid hemangioma Epithelioid hemangioma

Epstein-Barr virus

Intestinal EBV-associated smooth muscle tumor Nodal extension of an intestinal EBV-associated smooth muscle (...)

epulis

Giant cell epulis (CD68 immunostaining)

erythrophagocytosis

Erythrophagocytosis

Ewing sarcoma

Ewing sarcoma Ewing sarcoma Ewing sarcoma Ewing sarcoma: CD99 positivity Ewing sarcoma: CD99 positivity Ewing sarcoma: CD99 positivity Ewing sarcoma of the fibula Femoral Ewing sarcoma Femoral Ewing sarcoma Femoral Ewing sarcoma Femoral Ewing sarcoma Femoral Ewing sarcoma Ewing sarcoma in spongious bone Ewing sarcoma in spongious bone Nodal metastasis of an Ewing sarcoma at a pulmonary hilus

extramedullary hematopoiesis

Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks)

facial granulome

Facial granulome Facial granulome Facial granulome Facial granulome

familial adenomatous polyposis

Colonic adenomatous polyposis. 1 Colonic adenomatous polyposis. 2 Colonic adenomatous polyposis. 3 Colonic adenomatous polyposis. 4 Tubulous microadenoma in FAP

familial renal tubular dysgenesis

EMA labelling in renal tubular dysgenesis

fascia

Hypodermis and fascia Hypodermis and fascia

femoral Langerhans histiocytosis

Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis

fetal adrenal 20 weeks

Fetal adrenal 20 weeks Fetal adrenal 20 weeks

fetal adrenals

Fetal adrenomegaly in Beckwith-Wiedemann syndrome

fetal and embryonal hepatoblastoma

Fetal hepatoblastoma Fetal and embryonal hepatoblastoma

fetal colon

Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon and meconium (23 weeks) Feat colon and meconium (24 weeks)

fetal colon 24 weeks

Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Fetal colon 24 weeks Colonic meconium at 24 weeks

fetal hearts

Fetal heart 18 weeks Fetal heart 18 weeks Fetal heart (20 weeks) Fetal heart (20 weeks)

fetal hepatic hemosiderosis

Fetal hepatic hemosiderosis (24 weeks) Fetal hepatic hemosiderosis (24 weeks) Fetal hepatic hemosiderosis (24 weeks) Fetal hepatic hemosiderosis (24 weeks) Fetal hepatic hemosiderosis (24 weeks)

fetal hydronephrosis

Hydronephrosis Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres with posterior (...) Bilateral hydronephrosis and bilateral megaureteres with posterior (...) Bilateral hydronephrosis and bilateral megaureteres with posterior (...) Bilateral hydronephrosis and bilateral megaureteres with posterior urethral (...) Neonatal hydronephrosis with cystic dilatation of the upper (...) Neonatl hydronephrosis with superior polar cystic dilatation Neonatl hydronephrosis with superior polar cystic dilatation Fetal obstructive kidney (22 weeks)

fetal kidney 11 weeks

Fetal kidney and adrenal at 11 weeks

fetal kidney 20 weeks

Fetal kidney and adrenal gland at 20 weeks Fetal kidney at 20 weeks Fetal kidney at 20 weeks

fetal kidneys

Fetal kidney 28 weeks Fetal kidney 11 weeks Fetal kidney 20 weeks Fetal kidney at 20 weeks Early fetal kidney Fetal kidney

Fetal liver

Fetal portal space at 25 weeks Fetal portal space at 25 weeks Fetal portal space at 22 weeks Fetal portal space at 22 weeks

fetal liver 20 weeks

Fetal liver 20 weeks Fetal liver 20 weeks Fetal liver 20 weeks Fetal liver 20 weeks

fetal liver 25 weeks

Fetal liver 25 weeks Fetal liver 25 weeks Fetal liver 25 weeks Fetal liver 25 weeks

fetal lungs

Featl lung 18 weeks Fetal lung 22 weeks

fetal multicystic kidneys

Renal dysplasia in Meckel syndrome (15 weeks) Renal dysplasia in Meckel syndrome (15 weeks)

fetal myocardium

Fetal myocardium 25 weeks

fetal obstructive kidney

Fetal obstructive kidney 21 weeks Fetal obstructive kidney 21 weeks Fetal obstructive kidney 22 weeks Fetal obstructive kidney 22 weeks Fetal obstructive kidney 19 weeks Fetal obstructive kidney 19 weeks Fetal obstructive renal dysplasia Fetal obstructive renal dysplasia Fetal obstructive kidney (22 weeks)

fetal oligocystic kidney

Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389) Fetal oligocystic kidneys of unknow cause (case 11389)

fetal ovaries

Fetal ovaries 20 weeks Fetal ovaries 31 weeks Fetal ovaries 19 weeks

fetal ovary (22 weeks)

Fetal ovary (22 weeks) Fetal ovary (22 weeks)

fetal ovary 20 weeks

Fetal ovaries and uterus 20 weeks Fetal ovaries 20 weeks Fetal ovaries at 20 weeks

fetal ovary 25 weeks

Fetal ovary 25 weeks Fetal ovary 25 weeks

fetal ovary 31 weeks

Fetal ovary 31 weeks

Fetal pancreas

Fetal pancreas 25 weeks

fetal pancreas 25 weeks

fetal pneumonitis

Featl pneumonitis

fetal portal space 21 weeks

Fetal portal space 21 weeks Fetal portal space 21 weeks Fetal portal space 21 weeks Fetal portal space 21 weeks

fetal testis

Fetal testis 39 weeks Fetal testis 16 weeks Fetal testis 21 weeks Fetal testsi 22 weeks

fetal testis 22 weeks

Fetal testis (22 weeks) Fetal testis (22 weeks) Fetal testis (22 weeks)

fetal testis 39 weeks

Fetal testis 39 weeks

fetal thymus

Thymus 18 weeks Featl thymus 25 weeks Fetal thymus 25 weeks

fetal thymus 25 weeks

Fetal thymus 25 weeks Fetal thymus 25 weeks

fetal trachea 18 weeks

Fetal trachea 18 weeks

fetal upper limbs

fetal uterus 20 weeks

Fetal uterus and ovaries (20 weeks)

fibrinoid capillaritis

Fibrinoid capillaritis Fibrinoid capillaritis Fibrinoid capillaritis Fibrinoid capillaritis

fibroblastic tumors

Congenital fibrosarcoma Infantile fibrosarcoma Extra-abdominal desmoid tumor Extra-abdominal desmoid tumor

fibrohistiocytic tumors

fibrosarcomas

Congenital fibrosarcoma Congenital fibrosarcoma

Fibrosis

Portal and septal fibrosis in ductal plate malformation (congenital hepatic (...) Portal and septal fibrosis in ductal plate malformation (congenital hepatic (...) Portal and septal fibrosis in ductal plate malformation (congenital hepatic (...) Portal and septal fibrosis in ductal plate malformation (congenital hepatic (...) Portal and septal fibrosis in ductal plate malformation (congenital hepatic (...) Hepatic cirrhosis Hepatic cirrhosis

fibrous tumors

Fibrous hamartoma of infancy (juvenile fibrous hamartoma) Extra-abdominal desmoid fibromatosis (fibrous tumor) Extra-abdominal desmoid fibromatosis (fibrous tumor)

fistulas

Infectious fistula from lymph node to the skin after a mycobacterial (...) Cutaneous fistula complicating a chronic osteomyelitis Cutaneous fistula complicating a chronic osteomyelitis

focal active colitis

Lymphocytic infiltration and fibrosis of a colonic gland in active focal (...)

focal mesangial sclerosis

Focal mesangial sclerosis Focal mesangial sclerosis

focal pulmonary hemorrhages

Focal pulmonary hemorrhages in severe prematurity (24 weeks)

focally enhanced gastritis

Glandular abcess in focal active gastritis Glandular abcess in focal active gastritis Acute glandulitis in active focal gastritis Acute glandulitis in active focal gastritis

FSCNs

Fascin in classic Hodgkin disease

fungal adenitis

Candida adenitis in a neutropenic child.

Fungal infections

Fungal vasculitis in systemic invasive aspergillosis Fungal vasculitis in systemic invasive aspergillosis Hepatic fungal granuloma Zygomycosis (mucormycosis) Zygomycosis (mucormycosis) Zygomycosis (mucormycosis) Zygomycosis (mucormycosis) Candida adenitis in neutropenia

fusiform cell sarcomas

Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736)

fusiform cell tumors

Congenital fibrosarcoma Nodular fasciitis Nodular fasciitis Nodular fasciitis Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736) Monophasic synovial sarcoma (Case 11736)

ganglioneuromas

Ganglioneuroma. Macroscopy. Ganglioneuroma. Macroscopy. Ganglioneuroma Ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Mature ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma

gastric acute glandulitis

Gastric acute glandulitis Gastric acute glandulitis and glandular abcess Gastric acute glandulitis and glandular abcess Gastric acute glandulitis Gastric acute glandulitis

gastric foregut duplication cyst

Juxta-splenic gastric duplication cyst Juxta-splenic gastric duplication cyst

gastric Peutz-Jeghers polyp

Gastric Peutz-Jeghers polyp Gastric Peutz-Jeghers polyp Gastric Peutz-Jeghers polyp Gastric Peutz-Jeghers polyp

gastric polyps

Gastric Peutz-Jeghers polyp Gastric Peutz-Jeghers polyp Smooth muscle actin immunolabeling of a gastric Peutz-Jeghers (...) Smooth muscle actin immunolabeling of a gastric Peutz-Jeghers (...)

gastrointestinal stromal tumor

Gatsric GIST Gastric GIST High grade GIST High grade GIST High grade GIST High grade GIST High grade GIST Gastric GIST

germ cell tumors

Testicular embryonal carcinoma Testicular embryonal carcinoma Testicular embryonal carcinoma

giant cell epulis

Giant cell epulis (CD68 immunostaining) Giant cell epulis (CD68 immunostaining)

giant cell hepatitis

Giant cell hepatitis

giant cell transformation

Giant cell transformation of hepatocytes in cholestasis Giant cell transformation. Giant multinucleated hepatocytes

giant cell tumors

Giant cell epulis (CD68 immunostaining)

Glandulitis

Acute colonic cryptitis in Crohn disease Acute colonic cryptitis in Crohn disease

glomerular cysts

Glomerular cysts Glomerular cysts

gonadal agenesis

Streak gonad in monosomy X Streak gonad in monosomy X Testicular agenesis

gonads

Ovary (1 year)

granulation tissue

Granulation tissue Granulation tissue Granulation tissue

granuloma annulare

Granuloma annulare Granuloma annulare Granuloma annulare

Granulomas

Suppurative epithelioid granuloma in a chalazion Suppurative epithelioid granuloma in a chalazion Suppurative epithelioid granuloma in familial granulomatous disease (...) Suppurative epithelioid granuloma in familial granulomatous disease (...)

granulomatous adenitis

Tuberculoid granulomatous adenitis

granulomatous colitis

Granulomatous colitis in Crohn disease Granulomatous colitis in Crohn disease

granulomatous hepatitis

Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown)

granulomatous neutrophilic dermatitis

Granulomatous neutrophilic dermatitis

Granulomatous reaction

Anti-helminthic granulomatous reaction Chronic granulomatous inflammation (macroscopical aspect)

Griscelli disease

Griscelli syndrome - Hair Griscelli syndrome - Hair Griscelli syndrome - Hair Griscelli syndrome - Hair Griscelli syndrome - Hair Griscelli syndrome - Skin Griscelli syndrome - Skin Griscelli syndrome - Skin Griscelli syndrome - Skin Griscelli disease - Melanocyte ultrastructure

Grover disease

gynecomasty

Halo nevus

Hamartomas

Fibrous hamartoma of infancy Intestinal myoepithelial hamartoma Intestinal myoepithelial hamartoma Intestinal myoepithelial hamartoma

Heart

Normal myocardium Mitral valve in bacterial endocarditis Mitral valve in bacterial endocarditis Mitral valve in bacterial endocarditis Heart Myocardium and ventricles

hemangiomas

Dermal capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Intramuscular lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma

Hematopoiesis

Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks)

hemophagocytosis

Erythrophagocytosis

hemorrhagic necrosis

Hemorrhagic necrosis in adnexal torsion Hemorrhagic necrosis in adnexal torsion Testicular hemorrhagic necrosis in testicular torsion

Hemosiderosis

Pulmonary hemosiderosis (emcephalopathy with recurrent aspirations)

Henoch-Schonlein purpura

IgA vascular deposits in Henoch-Schonlein purpura

hepatic ARPKD

Ductal plate malformation (Congenital hepatic fibrosis) in hepatic (...) Ductal plate malformation (Congenital hepatic fibrosis) in hepatic (...) Ductal plate malformation (Congenital hepatic fibrosis) in hepatic (...) Ductal plate malformation (Congenital hepatic fibrosis) in hepatic (...) Ductal plate malformation (Congenital hepatic fibrosis) in hepatic (...) Congenital hepatic fibrosis in hepatic ARPKD Liver ARPKD at 21 weeks

hepatic Ellis-van Creveld disease

Cirrhosis in Ellis-van Creveld disease Portal fibrosis and ductular proliferation in Ellis-van Creveld (...)

hepatic fibrosis

Hepatic fibrosis Portal fibrosis in ARPKD at 21 weeks Fetal hepatic fibrosis at 29 weeks Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis) Ductal plate malformation (congenital hepatic fibrosis)

hepatic granulomas

hepatic epithelioid granuloma Hepatic epithelioid granuloma Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown) Hepatic granuloma (Etiology unknown)

hepatic GVHD

hepatic hematopoiesis

Periportal hematopoiesis (32 weeks) - Etiology unknown Periportal hematopoiesis (32 weeks) - Etiology unknown Periportal hematopoiesis (32 weeks) - Etiology unknown Periportal hematopoiesis (32 weeks) - Etiology unknown

hepatic metabolic diseases

Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4) Glycogen storage type 4 (GSD4)

hepatic periductal fibrosis

Periductal fibrosis in auto-immune sclerosing cholangitis Periductal fibrosis in auto-immune sclerosing cholangitis Periductal fibrosis in auto-immune sclerosing cholangitis Periductal fibrosis in auto-immune sclerosing cholangitis Periductal fibrosis in auto-immune sclerosing cholangitis

hepatic pneumatosis

Hepatic pneumatosis in septicemia Hepatic pneumatosis in septicemia Hepatic pneumatosis in septicemia Hepatic pneumatosis in septicemia Hepatic pneumatosis in septicemia

hepatic storage diseases

Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4) Gylogen storage disease type 4 (GSD4)

hepatic tuberculoid granuloma

Hepatic epithelioid granuloma Hepatic epithelioid granuloma Hepatic fungal granuloma

hepatic veno-occlusive disease

hepatic veno-occlusive disease hepatic veno-occlusive disease hepatic veno-occlusive disease

hepatoblastomas

Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Hepatoblastoma Formalin-fixed hepatoblastoma Hepatoblastoma after formalin fixation Tumoral trisomy 2 in hepatoblastoma MRI and macroscopy of the same case of hepatoblastoma Mixed hepatoblastoma

hepatocyte apoptosis

Hepatocyte apoptosis and cholestasis

hepatocytes

Hepatocytes Hepatocytes

hepatocytic apoptotic bodies

Hepatocytic apoptotic body Hepatocytic apoptotic body and cholestasis Hepatocytic apoptotic bodies in minocycline-induced hepatitis Hepatocytic apoptotic bodies in minocycline-induced hepatitis

hepatocytic ballooning

Hepatocyte balloning degeneration. Hepatocyte balloning degeneration

hepatocytic cholestasis

Hepatocytic cholestasis Hepatocytic cholestasis Hepatocytic cholestasis Hepatocytic cholestasis and hepatocytic apoptosis

hepatocytic cytoplasm

Normal hepatocytic cytoplasm Normal hepatocytic cytoplasm PAS coloration of hepatocytic cytoplasm (before diastase) PAS coloration of hepatocytic cytoplasm (before diastase)

hepatocytic cytoplasmic inclusions

Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4) Polyglycosan inclusions in glycogen storage disease type 4 (GSD4)

hepatocytic drop-out

Centrilobular hepatocytic drop-out Centrilobular hepatocytic drop-out Hepatocytic drop-out in minocycline-induced hepatitis Hepatocytic drop-out in minocycline-induced hepatitis Drop-out in a focus of lobular hepatitis in minocycline-induced (...) Drop-out in a focus of lobular hepatitis in minocycline-induced (...) Drop-out in a focus of lobular hepatitis in minocycline-induced (...) Drop-out in a focus of lobular hepatitis in minocycline-induced (...) Drop-out in a focus of lobular hepatitis in minocycline-induced (...)

hepatocytic inclusions

Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4) Cytoplasmic inclusions in glycogen storage disease type 4 (GSD4)

hepatocytic lesions

Ballooning hepatocytes

hepatocytic steatosis

Hepatic steatosis Steatotic liver Hepatic steatosis Macrovesicular hepatocytic steatosis (Oil-Red-O) Macrovesicular hepatocytic steatosis (Oil-Red-O) Macrovesicular hepatocytic steatosis (Oil-Red-O)

herringbone pattern

herringbone pattern Herringbone tissue Herringbone floor

Hirschsprung disease

Colonic aganglionosis Colectomy in Hirschsprung disease Colonic mucosal ulceration in Hirschsprung disease Colorectal Hirschsprung disease Colorectal Hirschsprung disease Colorectal Hirschsprung disease

Hodgkin cells

Hodgkin cells and Sternberg cells in Hodgkin lymphoma Hodgkin cells and Sternberg cells in Hodgkin lymphoma Hodgkin cells and Sternberg cells in mixed cellularity Hodgkin (...)

Hodgkin lymphomas

Classical Hodgkin disease type scleronodular Hodgkin lymphoma invasion of the liver Hodgkin lymphoma invasion of the liver Hodgkin lymphoma invasion of the spleen

hyaline globules

Hyaline globules in Yolk sac tumor Hyaline globules in Yolk sac tumor

hyaline membrane disease

Hyaline membrane disease Hyaline membrane disease Hyaline membrane disease Hyaline membrane disease Hyaline membrane disease Hyaline membrane disease

hydatiform moles

Complete hydatiform mole Complete hydatiform mole Hydatiform mole Hydatiform mole

hypodermal tumoral infiltration

Hypodermal tumoral infiltration by a dermatofibrosarcoma protuberans

hypodermis

Hypodermis Hypodermis Hypodermis and fascia Hypodermis and fascia

hypopharyngeal lymphomas

Hypopharyngeal lymphoma

immature paraganglioma

Immature paraganglioma of the vesical region Immature paraganglioma of the vesical region Immature paraganglioma of the vesical region NSE in immature paraganglioma of the vesical region Synaptophysin staining in immature paraganglioma of the vesical (...) Synaptophysin staining in immature paraganglioma of the vesical (...)

immunoglobulin-A

IgA vascular deposits in Henoch-Schonlein purpura

inclusion epidermal cyst

Inclusion epidermal cyst Inclusion epidermal cyst

infantile hemangioma

Infantile hemangioma Infantile hemangioma Infantile hemangioma GLUT1 positivity in nfantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma Infantile hemangioma

infantile myofibroma

Infantile myofibromatosis: duodenal localization Infantile myofibromatosis in bone Infantile myofibromatosis - smooth musle actin positivity Infantile myofibromatosis Infantile myofibromatosis Solitray myofibroma Infantile myofibromatosis Infantile myofibromatosis

infectious fistula

Adenocutaneous fistula from a mycobacterial adenitis Adenocutaneous fistula from a mycobacterial adenitis

inflammatory myofibroblastic tumor

ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor ALK immunolabelling in myofibroblastic inflammatory tumor

interalveolar septa

Macroscopical view of interalveolar septa Normal lung parenchyma Normal lung parenchyma

interlobular cholangitis

Interlobular cholangitis in hepatic GVHD

intersex anomalies

Micropenis and perineal hypospadias in mosaic monosomy X Micropenis and perineal hypospadias in mosaic monosomy X Sexual ambiguity in caudal regression syndrome with lumbosacral agenesis (...) Sexual ambiguity in caudal regression syndrome with lumbosacral agenesis (...)

intestinal arteriovenous malformation

Intestinal arteriovenous malformation

intestinal EBV-associated smooth muscle tumor

Intestinal EBV-associated smooth muscle tumor Intestinal EBV-associated smooth muscle tumor

intestinal infantile myofibromatosis

Infantile myofibromatosis: duodenal localization Duodenal localization of an infantile myofibromatosis

intestinal muscularis mucosae

Smooth muscle actin labeling of intestinal muscularis mucosae and (...)

intestinal muscularis propria

Smooth muscle actin labeling of intestinal muscularis mucosae and (...)

intestinal pneumatosis

Intestinal pneumatosis and digestive ischemia in cystic fibrosis (3 (...) Intestinal pneumatosis and digestive ischemia in cystic fibrosis (3 (...) Intestinal pneumatosis and digestive ischemia in cystic fibrosis (3 (...)

intestinal tumors

Intestinal myoepithelial hamartoma Intestinal myoepithelial hamartoma Intestinal myoepithelial hamartoma

intestinal ulceration

Ileal ulceration in Crohn ileitis Ileal ulceration in Crohn ileitis

intestinal villi

Intestinal villi Normal intestinal villi Normal intestinal villi Normal intestinal villi

intimal fibrosis

Intimal fibrosis after aortic coarctation Intimal fibrosis in pulmonary artery Intimal fibrosis in pulmonary artery Intimal fibrosis in pulmonary artery Intimal fibrosis in a small pulmonary artery Intimal fibrosis in a small pulmonary artery

intimal fibrosis in a small pulmonary artery

Intimal fibrosis in a small pulmonary artery (endovascular foreign (...) Intimal fibrosis in a small pulmonary artery (endovascular foreign (...)

intracellular crystals

Cholesterol crystals within macrophages in Wolman disease-CESD Cholesterol crystals within macrophages in Wolman disease-CESD Cholesterol crystals within macrophages in Wolman disease-CESD

intramacrophagic cholesterol crystals

Intramacrophagic cholesterol crystals in CESD-Wolman disease

intramacrophagic crystals

intramuscular hemangioma

Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma

invasive aspergillosis

Cerebral abcess in invasive aspergillosis Fungal vasculitis in systemic invasive aspergillosis Fungal vasculitis in systemic invasive aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis Invasive pulmonary aspergillosis

juvenile polyp

Juvenile polyp. Macroscopy. Juvenile polyp. HE x1. Juvenile polyp. HE 1x. Juvenile polyp. HE 1x. Juvenile polyp. HE 1x. CD3 immunostaining in juvenile polyp CD20 immunostaining in juvenile polyp. Juvenile polyp Rectal juvenile polyp Rectal juvenile polyp Rectal juvenile polyp Rectal juvenile polyp Juvenile polyps in juvenile polyposis

juvenile polyposis

Juvenile polyp Juvenile polyps in juvenile polyposis

juxta-adrenal hematoma

Juxta-adrenal hematoma

Kidneys

Fetal kidney Fetal kidney 27 weeks Kidney - Cytokeratin immunolabelling Kidney - EMA immunolabelling Kidneys Kidney (Mild congestion)

Langerhans cell

Dermal Lngerhans cells in cutaneous Langerhans histiocytosis Birbeck granule Birbeck granules Birbeck granules Birbeck granules Birbeck granules Langerhans cell histiocytosis Langerhans cell histiocytosis

Langerhans cell histiocytosis

Cutaneous Langerhans histiocytosis Cutaneous Langerhans histiocytosis Cutaneous Langerhans histiocytosis Birbeck granule Birbeck granules Birbeck granules S-100 immunostaining CD1a immunostaining in Langerhans histiocytosis Femoral Langerhans histiocytosis Femoral Langerhans histiocytosis

Langerhans islets

Langerhans islet Pancreas

Langhans cell

Langhans cell in tuberculoid granuloma Langhans cell in tuberculoid granuloma Langhans cell in tuberculoid granuloma Langhans cell in tuberculoid granuloma

Large cells

Hodgkin cells and Reed-Sternberg cells in classic Hodgkin lymphoma Hodgkin cells and Reed-Sternberg cells in classic Hodgkin lymphoma

large round cell tumors

Large round tumoral cells in malignant rhabdoid tumor Large round tumoral cells in malignant rhabdoid tumor

laryngeal papilloma

Laryngeal papilloma

laryngeal papillomatosis

Laryngeal papilloma

Leishmania donovani

Leishmania donovani

lentigo maligna

Lentigo maligna Lentigo maligna Lentigo maligna Lentigo maligna

lentigo simplex

lichen planus

lichen striatus

linear IgA bullous dermatosis

lipid-laden macrophages

Foamy macrophages in renal tubules Lipophages in alveolar lavage

lipidic formation with foreign body reaction

cholesteatoma cholesteatoma cholesteatoma

lipofibromatous tumors

Fibrous hamartoma of infancy (juvenile fibrous hamartoma) Fibrolipoma Fibrolipoma

lipofuscin deposits

Lipofuscin deposits in digestive smooth muscle cells upstream a jejunal (...) Lipofuscin deposits in digestive smooth muscle cells upstream a jejunal (...) Lipofuscin in Kuppfer cells Lipofuscin in Kuppfer cells Lipofuscin in portal macrophages Lipofuscin in portal macrophages Lipofuscin in portal macrophages Lipofuscin in portal macrophages Lipofuscin in portal macrophages Lipofuscin in portal macrophages

lipofuscin deposits in digestive smooth muscle cells

Lipofuscin deposits in digestive smooth muscle cells upstream a jejunal (...) Lipofuscin deposits in digestive smooth muscle cells upstream a jejunal (...)

lipomas

Epiploic hemorrhagic lipoma Subcutaneous mature lipoma Lower limb lipoma Lower limb lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma Mesenteric lipoma

liver allograft veno-occlusive disease

Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Post-transplantation hepatic veino-occlusive disease Hepatic transplant veno-occlusive disease Hepatic transplant veno-occlusive disease

lobular capillary hemangioma

Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma Intramuscular lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma Lobular capillary hemangioma

lobular cholestasis

Centrilobular cholestasis. Lobular cholestasis Lobular cholestasis Lobular cholestasis Pseudoacinar formation in lobular cholestasis Cholestasis and apoptotic bodies Functional cholestasis in neonatal cardiogenic shock

lobular granulocyte aggregate

Lobular granulocyte aggregate Lobular granulocyte aggregate

lymphangiomas

Intestinal lymphangioma Intestinal lymphangioma Lingual lymphangioma Lingual lymphangioma Thrombosed lymphangioma Lingual lymphangioma Retropancreatic cystic lymphangioma Retropancreatic cystic lymphangioma Lymphangiomyoma (lymphangioleiomyoma) SMA immunostaining in lymphangiomyoma (lymphangioleiomyoma)

lymphangiomyoma

Lymphangiomyoma Lymphangiomyoma

lymphoblastic lymphomas

Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma Precursor B lymphoblastic lymphoma (osseous localization)

lymphohistiocytic ALCL

lymphoid follicles

Lymphoid follicle BCL2 immunostaining in adenoid Pulmonary follicular lymphoid hyperplasia CD20 immunostaining of pulmonary lymphoid follicles Lymphoid follicles in normal tonsil (bcl2) Lymphoid follicles in normal tonsil (CD20) Lymphoid follicles in normal tonsil (CD3) Lymphoid follicles in normal tonsil (H&E)

lymphoid follicular hyperplasia

CD20 immunostaining in nodal follicular lymphoid hyperplasia

lymphoid hyperplasias

Appendiceal lymphoid hyperplasia Lymphoid polyposis (multiple lymphoid polyps) Lymphoid polyposis (multiple lymphoid polyps) Appendiceal lymphoid hyperplasia (CD20) Appendiceal lymphoid hyperplasia (CD20) Appendiceal lymphoid hyperplasia Appendiceal lymphoid hyperplasia Cutaneous B-cell lymphoid hyperplasia Lymphoid polyposis (multiple lymphoid polyps) Lymphoid polyposis (multiple lymphoid polyps)

lymphoid organs

Lymphoid follicles in normal tonsil (bcl2) Lymphoid follicles in normal tonsil (CD3) Lymphoid follicles in normal tonsil (CD20) Lymphoid follicles in normal tonsil (H&E) CD20 immunostaining of a normal tonsil

Lymphomas

Enlarged cervical lymph node in classical Hodgkin lymphoma type nodular (...) Burkitt lymphoma Burkitt lymphoma (Ki67 positivity in all cells) Intestinal Burkitt lymphoma Intestinal Burkitt lymphoma

lymphomatoid granulomatosis

Pulmonary lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis

Macrophages

Portal lipid-laden macrophages in CESD-Wolman disease Portal lipid-laden macrophages in CESD-Wolman disease Cholesterol crystals within macrophages in CESD-Wolman disease Portal lipid-laden macrophages in CESD-Wolman disease Carbohydrate-laden macrophages in GSD4 Carbohydrate-laden macrophages in GSD4 Foamy macrophages in splenic red pulp Foamy macrophages in splenic red pulp Foamy macrophages in splenic red pulp

macrophagic infiltrations

Portal macrophagic infiltration in Wolman disease Splenic spumous macrophagic infiltration Splenic spumous macrophagic infiltration Splenic spumous macrophagic infiltration

malignant rhabdoid tumor

Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor Pulmonary localization of a malignant rhabdoid tumor

massive hepatic necrosis

Regenerative nodules after massive hepatic necrosis Regenerative nodules after massive hepatic necrosis Ductular proliferation after massive hepatic necrosis Massive hepatic necrosis Massive hepatic necrosis Massive hepatic necrosis Massive hepatic necrosis in adenoviral hepatitis

mature teratoma

Ovarian mature teratoma Ovary hemorrhagic mature teratoma Cystic cavity and mature thymus in mature teratoma Ovarian mature teratoma Ovarian mature teratoma Ovarian mature teratoma Ovarian mature teratoma Ovarian mature teratoma (dermoid cyst) Ovarian mature teratoma (dermoid cyst) Testicular dermoid cyst Testicular dermoid cyst Ovarian mature teratoma Ovarian mature teratoma Ovarian mature teratoma Ovarian mature teratoma

meconial plug

Meconial impaction. Digestive compression by cystic renal disease and (...)

meconium

Meconium (24 weeks) Meconium in fetal colon (24 weeks) Meconium in fetal colon (24 weeks) Meconium in fetal colon (23 weeks) Meconium in fetal colon (24 weeks) Meconial aspiration (Premature 31 weeks) Meconial plug with meconial ileus in cystic fibrosis Meconial plug with meconial ileus in cystic fibrosis Neonatal meconium ileus with functionnal microcolon in cystic (...) Neonatal meconium ileus with functionnal microcolon in cystic (...)

medial line dermal sinus

Medial line dermal sinus Medial line dermal sinus

mediastinal ganglioneuroblastoma

mediastinal ganglioneuroblastoma mediastinal ganglioneuroblastoma mediastinal ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma Mediastinal intermixed ganglioneuroblastoma

mediastinal poorly differentiated neuroblastoma

mediastinal poorly differentiated neuroblastoma mediastinal poorly differentiated neuroblastoma

medullary Hodgkin lymphoma

Bone marrow localization of classic Hodgkin lymphoma Bone marrow localization of classic Hodgkin lymphoma Bone marrow localization of classic Hodgkin lymphoma CD30 in bone marrow localization of classic Hodgkin lymphoma CD30 in bone marrow localization of classic Hodgkin lymphoma

medullary lymphomas

Bone marrow localization of a classic Hodgkin lymphoma Bone marrow localization of a classic Hodgkin lymphoma Bone marrow localization of a classic Hodgkin lymphoma Bone marrow localization of a classic Hodgkin lymphoma (CD30) Bone marrow localization of a classic Hodgkin lymphoma

mixed cellularity Hodgkin lymphoma

mixed cellularity Hodgkin lymphoma mixed cellularity Hodgkin lymphoma mixed cellularity Hodgkin lymphoma mixed cellularity Hodgkin lymphoma CD15 in mixed cellularity Hodgkin lymphoma CD20 in mixed cellularity Hodgkin lymphoma CD30 in mixed cellularity Hodgkin lymphoma CD3 in mixed cellularity Hodgkin lymphoma CD3 in mixed cellularity Hodgkin lymphoma

mixed germ cell tumors

Testicular mixed germ cell tumor Mixed germ cell tumor

monosomy X

Sexual ambiguity and perineal hypospadias in mosaic monosomy X (...) Sexual ambiguity and perineal hypospadias in mosaic monosomy X (...) Streak gonad in Turner syndrome Streak gonad in Turner syndrome (arrow)

mucocele

Salivary mucocele Salivary mucocele Salivary mucocele Salivary mucocele Mucocele

mucolipidoses

Placental mucolipidosis Placental mucolipidosis

mucosal ulcerations

Mucosal ulceration in acute appendicitis Mucosal and submucosal ulcerations in Crohn colitis

muscular infiltrations

Muscular lymphoid infiltration

muscular lymphocytic infiltration

Muscular lymphocytic infiltration Muscular lymphocytic infiltration

muscular tumors

Cardiac rhabdomyoma

muscularis mucosae

Smooth muscle actin labeling of muscularis mucosae and muscularis (...)

mycobacterial fistula

Adenocutaneous fistula from a mycobacterial adenitis Adenocutaneous fistula from a mycobacterial adenitis

mycobacterial infections

Mycobacterial adenitis with nodal-cutaneous fistula Mycobacterial adenitis with granulomatous adenitis

myocardial adipocytic infiltration

Myocardial adipocytic infiltration

myocardium

Normal cardiomyocytes Normal myocardium Normal myocardium Normal cardiomyocytes Fetal myocardium 25 weeks Normal myocardium Myocardium in cholestatic jaundice

myofibroblastic tumors

Infantile myofibromatosis ALK immunolabelling in myofibroblastic inflammatory tumor

myxoid tumors

Primitive myxoid mesenchymal tumor of infancy (PMMTI) Primitive myxoid mesenchymal tumor of infancy (PMMTI) Primitive myxoid mesenchymal tumor of infancy (PMMTI) Primitive myxoid mesenchymal tumor of infancy (PMMTI) Embryonal rhabdomyosarcoma Embryonal rhabdomyosarcoma Primitive myxoid mesenchymal tumor of infancy (PMMTI) (Case (...) Primitive myxoid mesenchymal tumor of infancy (PMMTI) (Case (...)

nasal glands

nasal mucosa

Necrosis

Caseous necrosis fistulating to the skin in mycobacterial adenitis Caseous necrosis in mycobacterial adenitis Caseous necrosis in mycobacterial adenitis Necrotic uterine leiomyoma Necrotic uterine leiomyoma

necrotic nodules

Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis

necrotizing adenitis

Infectious necrotizing adenitis Cutaneous fistula complicating a mycobacterial necrotizing adenitis Mycobacterial necrotizing adenitis Mycobacterial necrotizig adenitis

necrotizing enterocolitis

Neonatal necrotizing enterocolitis neonatal necrotizing enterocolitis neonatal necrotizing enterocolitis

necrotizing granulomatosis

necrotizing vasculitis

Medium-size vessel fibrinoid necrosis in polyarteritis nodosa

neonatal enteropathies

PAS in microvillous inclusion disease CD10 in microvillous inclusion disease

neonatal necrotizing enterocolitis

Neonatal necrotizing enterocolitis neonatal necrotizing enterocolitis neonatal necrotizing enterocolitis

nephronophthisis-associated liver disease

Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Normal portal space and interlobular biliary ducts in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...) Portal fibrosis and biliary ductular proliferation in juvenile (...)

neuroblastic tumors

Differentiating neuroblastoma Differentiating neuroblastoma Neuroblastoma Neuroblastoma Mature ganglioneuroma Mature ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Maturing ganglioneuroma Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) NSE immunostaining of a poorly differentiated neuroblastoma (Case (...)

neuroblastomas

Neuroblastoma. Macroscopy Neuroblastoma. Macroscopy Adrenal neuroblastoma Adrenal neuroblastoma (post-chemotherapy appearance) Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Bone marrow metastasis of a neuroblastoma Adrenal differentiating neuroblastoma Differentiating neuroblastoma Differentiating neuroblastoma Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541) Mediastinal poorly differentiated neuroblastoma (Case 11541)

nevus lipomatosus superficialis

Nevus lipomatosus superficialis

nevus sebaceous of Jadassohn

Nevus sebaceous of Jadassohn Nevus sebaceous of Jadassohn Nevus sebaceous of Jadassohn

NICH

nodal Burkitt lymphoma

nodal CD20+ nodules

CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in progreesive transformation of germinal centers (...) CD20+ nodules in nodular lymphocyte predominant Hodgkin lymphoma (...) CD20+ nodules in nodular lymphocyte predominant Hodgkin lymphoma (...) CD20+ nodules in nodular lymphocyte predominant Hodgkin lymphoma (...)

nodal fibrosis

Nodal fibrosis in nodular sclerosing Hodgkin lymphoma Nodal fibrosis in nodular sclerosing Hodgkin lymphoma

nodal follicular hyperplasia

Lymphoid follicular hyperplasia Nodal lymphoid follicular hyperplasia Nodal follicular hyperplasia Follicular hyperplasia: BCL2 immunostaining Follicular hyperplasia: CD20 immunostaining

nodal necrosis

Nodal caseous necrosis in mycobacterial adenitis Nodal caseous necrosis in mycobacterial adenitis Nodal caseous necrosis in mycobacterial adenitis Nodal caseous necrosis in mycobacterial adenitis with cutaneous (...)

nodular fasciitis

Nodular fasciitis Nodular fasciitis Nodular fasciitis Nodular fasciitis

nodular sclerosing Hodgkin lymphoma

Nodular sclerosing Hodgkin lymphoma Nodular sclerosing Hodgkin lymphoma Sternberg cells in Hodgkin lymphoma Sternberg cells in Hodgkin lymphoma Nodular sclerosing Hodgkin lymphoma Nodular sclerosing Hodgkin lymphoma Classical Hodgkin lymphoma type nodular sclerosing Nodular sclerosing Hodgkin disease CD30+ macroscopical nodules in classic Hodgkin lymphoma. Nodular sclerosing classic Hodgkin lymphoma

Nodules

Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis Pulmonary nodule in lymphomatoid granulomatosis

obstructive cortical cysts

Obstructive cortical cysts Obstructive cortical cysts Obstructive cortical cysts Obstructive cortical cysts Obstructive cortical cysts Fetal obstructive kidney 22 weeks

obstructive kidney

Obstructive kidney: hydronephrosis with chronic intertistial (...) Fetal obstructive kidney (22 weeks) Hydronephrosis with chronic interstitial nephritis

oesophageal eosinophilic infiltration

Organogenesis

Early nephrogenesis in embryo

osseous infantile myofibromatosis

Osseous infantile myofibromatosis Osseous infantile myofibromatosis Osseous infantile myofibromatosis

ossifying myositis

Ossifying myositis

ossifying tumors

Ossifying myositis

osteoblastic osteosarcoma

Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma Case 11734: Femoral osteoblastic osteosarcoma

osteochondrodysplasias

Short rib-polydactyly syndrome Short rib-polydactyly syndrome chondrodysplasia punctata chondrodysplasia punctata chondrodysplasia punctata chondrodysplasia punctata chondrodysplasia punctata Thanatophoric dysplasia Thanatophoric dysplasia Thanatophoric dysplasia Thanatophoric dysplasia Thanatophoric dysplasia Thanatophoric dysplasia Thanatophoric dysplasia (20 weeks) Thanatophoric dysplasia (20 weeks) Thanatophoric dysplasia (20 weeks) Thanatophoric dysplasia (20 weeks) Campomelic dysplasia Campomelic dysplasia Campomelic dysplasia Thanatophoric dysplasia (Fetus, 20 weeks) Osteogenesis imperfecta Osteogenesis imperfecta

osteoclasts

Osteoclast Osteoclast

osteosarcomas

Femoral osteosarcoma Femoral osteosarcoma Iliac osteosarcoma Iliac osteosarcoma Iliac osteosarcoma Femoral osteogenic osteosarcoma Femoral osteogenic osteosarcoma Femoral osteogenic osteosarcoma Femoral osteosarcoma Femoral osteosarcoma Invasion of soft tissues by a tibial osteosarcoma Femoral osteosarcoma Femoral osteosarcoma Pulmonary metastasis of an osteosarcoma Pulmonary metastasis of an osteosarcoma Pulmonary metastasis of an osteosarcoma Pulmonary metastasis of an osteosarcoma Pulmonary metastasis of an osteosarcoma Pulmonary metastasis of an osteosarcoma Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734) Femoral osteoblastic osteosarcoma (Case 11734)

ovarian cystic tumors

Ovarian mature teratoma (dermoid cyst) Ovarian mature teratoma (dermoid cyst) Ovarian serous cystadenoma Ovarian mature cystic teratoma

ovarian teratoma

Ovarian immature teratoma Neuroectodermal tissue in immature ovarian teratoma (6 years) Neuroectodermal tissue in immature ovarian teratoma (6 years) Cuteaneous tissue in immature ovarian teratoma (6 years) Ciliated epithelium in immature ovarian teratoma (6 years) Glandular tissue in immature ovarian teratoma (6 years) Ovarian cystic mature teratoma Ovarian cystic mature teratoma Ovarian mature teratoma

Ovaries

Menopausal ovary Normal ovary (21 years) Normal ovary (21 years) Ovaire (1 an)

palissaded granulomatous and neutrophilic dermatitis

palmar-plantar fibromatosis

Plantar fibromatosis Plantar fibromatosis Plantar fibromatosis Plantar fibromatosis

Pancreas

Pancreas Pancreas

pancreatic acinar cell carcinoma

Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma

pancreatic acinar tumors

Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma

pancreatic tumors

Pancreatic acinar cell carcinoma Pancreatic acinar cell carcinoma Pancreatic insulinoma

paratesticular embryonal rhabdomyosarcoma

paratesticular tumors

Paratesticular embryonal rhabdomyosarcoma

parosteal osteosarcoma

Parosteal osteosarcoma infiltrating muscles Parosteal osteosarcoma infiltrating muscles Parosteal osteosarcoma Parosteal osteosarcoma Parosteal osteosarcoma infiltrating muscles Parosteal osteosarcoma infiltrating muscles

partial hydatiform mole

Partial hydatiform mole

parvoviral inclusions

Parvoviral inclusion in fetal liver

pediatric fibrous tumors

Fibrous hamartoma of infancy (juvenile fibrous hamartoma)

pemphigus vulgaris

Pemphigus vulgaris Pemphigus vulgaris Pemphigus vulgaris Pemphigus vulgaris Pemphigus vulgaris

perforated acute appendicitis

perforated acute appendicitis perforated acute appendicitis

Perforations

Perforated acute appendicitis Perforated acute appendicitis

periductal inlammatory infiltrate

Periductal lymphocytic infiltrate in auto-immune sclerosing (...) Periductal lymphocytic infiltrate in auto-immune sclerosing (...)

periductal lymphocytic infiltrate

Periductal lymphocytic infiltrate in auto-immune sclerosing (...) Periductal lymphocytic infiltrate in auto-immune sclerosing (...)

perilobular fibrosis

Perilobular fibrosis

periportal hematopoiesis

Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks) Periportal hematopoiesis (Fetus, 32 weeks)

peritoneal endometriosis

Peritoneal endometriosis

peritoneal nodules

Peritoneal endometriotic nodule (endometriosis)

Peritonitis

Acute peritonitis in acute appendicitis

perniosis

Lymphocytic vasculitis in perniosis Lymphocytic vasculitis in perniosis Lymphocytic vasculitis in perniosis

persistence of embryologic structures

Phthirus pubis

Physeal growth plate

Physeal growth zone (18 weeks) Physeal growth zone (18 weeks) Fetal resting cartilage (18 weeks) Fetal resting cartilage (18 weeks) Zone of chondrocytic proliferation (18 weeks) Zone of chondrocytic proliferation (18 weeks) Zone of chondrocytic proliferation (18 weeks) Zone of chondrocytic proliferation (18 weeks) Zone of chondrocytic hypertrophy (left) and degeneration (right) Zone of chondrocytic degeneration Zone of chondrocytic degeneration Zone of chondrocytic hypertrophy (left) and degeneration (right) Physeal growth plate in a 10 year-old child

pigmented spindle cell nevus

pilomatricoma

Pilomatrixoma. Section. Macroscopy Pilomatrixoma. Slide. HE x1 Basaloid pilomatricoma Basaloid pilomatricoma Basaloid pilomatricoma Basaloid pilomatricoma Basaloid pilomatricoma Basaloid pilomatricoma Pilomatricoma

pilonidal sinus

Pilonidal sinus cyst Pilonidal sinus cyst Granulation tissue beside a pilonidal cyst Pilonidal sinus cyst Abcessed pilonidal sinus cyst Abcessed pilonidal sinus cyst

pilonidal sinus cyst

Abcessed pilonidal sinus cyst Abcessed pilonidal sinus cyst

placental mucolipidoses

Placental mucolipidosis Placental mucolipidosis

placental mucolipidosis