Microscopical anomalies

Articles

• 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 (...)

• 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 (...)

• 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 (...)

• 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

• 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 (...)

• hydropic villi
  21 May 2004

  hydropic chorionic villi, placental hydropic villi

• IgA mesangial deposits
  2 May 2005, by JA
• osmotic nephrosis
  9 March 2010, by JA

  References
  Osmotic nephrosis: acute kidney injury with accumulation of proximal tubular lysosomes due to administration of exogenous solutes. Dickenmann M, Oettl T, Mihatsch MJ. Am J Kidney Dis. 2008 Mar;51(3):491-503. PMID: #18295066#

• hyperkeratosis of eccrine duct orifices and follicles
  10 March 2016

  Etiology
  cardiofaciocutaneous syndrome (CFC syndrome - RASopathy)
  Images
  - https://twitter.com/DrLaurenStuart/status/707301587379691522])

• pseudoacinar formations
  28 November 2004

  pseudo-acinar formations

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