Microscopical anomalies

Articles

• 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 (...)

• 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 (...)

• hypertrophy
  3 June 2003

  Definition: Hypertrophy refers to an increase in the size of cells, resulting in an increase in the size of the organ.
  Pathogenesis
  The hypertrophied organ has no new cells, just larger cells. The increased size of the cells is due not to cellular swelling but to the synthesis of more structural components.
  Cells capable of division may respond to stress by undergoing both hyperplasia and hypertrophy, whereas in nondividing cells (e.g., myocardial fibers), hypertrophy occurs.
  Nuclei (...)

• amyloid stroma
  29 October 2004

  Etiology
  neuroendocrine tumors thyroid medullary carcinoma adrenal pheochromocytoma (40-70%) (#1544665#)

• central veinulitis
  17 May 2005

  central endothelitis

• Schiller-Duvall body
  14 October 2003

  Schiller-Duvall bodies
  Definition: Schiller-Duvall body is a morphological pattern seen in endodermal sinus tumor (yolk sac tumor). It consists in a central vessel surrounded by tumor cells in a cystic space often lined by flattened tumor cells.
  Schiller-Duvall body is a structure seen in the endodermal sinus pattern of yolk sac tumor. The whole structure being contains in a cystic space often lined by flattened tumor cells.
  Images
  Retroperitoneal mass - AFP, AE1AE3 and glypican (...)

• centrilobular hemorrhagic necrosis
  13 April 2004

  Etiology
  veno-occlusive disease
  acute cardiac failure

• hepatic lipogranuloma
  14 July 2004

  Etiology
  hepatic steatosis alcoholic liver disease
  mineral oil granuloma

• Mucosal necrosis
  29 June 2005

  Localization
  laryngeal mucosal necrosis
  tracheal mucosal necrosis
  digestive mucosal necrosis colonic mucosal necrosis
  See also
  Mucosal ulceration

• hyaline globules
  14 October 2003

  Eosinophilic hyaline globules
  Images
  Eosinophilic hyaline globules in yolk sac tumors https://twitter.com/HenryTranMD/status/715457178912428032 https://twitter.com/DrAldehyde/status/893837144397053955
  Etiology
  hyaline globules in diseases alpha-1-antitrypsine deficiency rete testis hyperplasia with hyaline globule formation (#1702268#)
  hyanline globules in tumors endodermal sinus tumor (Yolk sac tumor) infantile digital fibroma vascular tumors malignant rhabdoid tumor (MRT) (...)

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