Microscopical anomalies

Articles

• Langhans cells
  1 June 2004

  Langhans cells

• metaplasia
  11 July 2003

  Definition: Metaplasia is the reversible replacement of one differentiated cell type with another differentiated cell type.
  Metaplasia causes precursor cells to change their cell fate, and do not change existing differentiated cells.
  Metaplasia is reversible and usually occurs in response to chronic irritation and inflammation and allows for substitution of cells that are better able to survive under circumstances in which a more fragile cell type might succumb.
  Metaplasia is a (...)

• suppurative granuloma
  26 April 2004

  tuberculoid granuloma with central suppuration, suppurative tuberculoid granuloma, suppurative granuloma; suppurative epithelioid granuloma; abscess-forming granulomatous lymphadenitis
  Etiology
  chalazion
  chronic granulomatous disease (MIM.306400)
  bacterial infections cat scratch disease lymphogranuloma venereum tularemia Yersinia infection actinomycosis
  mycobacterial infection
  fungal infections blastomycosis nocardiosis
  Links
  http://granuloma.homestead.com/suppurative.html (...)

• adrenal cytomegaly
  18 January 2006

  PO
  Definition: Adrenal cytomegaly is characterized by the presence of large polyhedral cells with eosinophilic granular cytoplasm and enlarged nuclei in the adrenal cortex. Adrenal cytomegaly is found in 0.8% pediatric autopsies.
  Adrenal cytomegaly is relatively common finding within fetal cortex in newborns, particularly premature infants (3-7%) or infants with Rh incompatibility.
  Adrenal cytomegaly may be associated with Beckwith-Wiedemann syndrome
  Focal adrenal cytomegaly can be (...)

• colonic cryptitis
  29 May 2004

  colonic glandulitis
  Etiology (Examples)
  IBDs Crohn colitis ulcerative colitis
  acute colitis infectious colitis
  See also
  colonic mucosal anomalies colonic cryptic anomalies

• ductular reaction
  25 June 2003

  neoductular proliferation, portal ductal proliferation, ductular proliferation

• abscess
  9 June 2004

  abcesses
  Definition: Abscesses are localized collections of purulent inflammatory tissue caused by suppuration buried in a tissue, an organ, or a confined space. They are produced by deep seeding of pyogenic bacteria into a tissue.
  Abscesses have a central region that appears as a mass of necrotic leukocytes and tissue cells. There is usually a zone of preserved neutrophils around this necrotic focus, and outside this region vascular dilation and parenchymal and fibroblastic proliferation (...)

• cytoplasmic inclusions
  24 August 2004

  Types
  polyglucosan bodies (polyglucosan inclusions) Lafora bodies Lafora body-like inclusions glycogen storage disease type IV (GSD4) adult polyglucosan body disease (APBD)
  nigral inclusions Lewy bodies pale bodies
  intermediate filament inclusion bodies Mallory bodies tumoral juxta-nuclear inclusions rhabdoid inclusions (in tumoral rhabdoid cells ) infantile digital fibroma (infantile digital fibromatosis )
  spironolactone bodies in aldosterone secreting adrenal cortical adenoma (...)

• bridging necrosis
  27 January 2004

  Definition: Bridging necrosis is the term given to confluent necrosis linking terminal venules to portal tracts. The term "Bridging necrosis" has been used for necrosis linking any of the vascular structures, but it is now more often restricted to the linking of terminal hepatic venules (centrilobular veins) to portal tracts (central-portal bridging necrosis).
  Bridging necrosis describes the location rather than the type of necrosis. It usually results from extensive necrosis of confluent (...)

• perivascular mononuclear cell infiltrate
  10 June 2003

  Localization
  cutaneous perivascular mononuclear cell infiltrate
  pulmonary perivascular mononuclear cell infiltrate pulmonary perivascular lymphoplasmocytic infiltrate
  See also
  inflammatory infiltrates perivascular inflammatory infiltrate

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