Colon and rectum

• chronic inflmmatory cells within epithelium
  14 July

  Examples
  microcopical colitis collagenous colitis lymphocytic colitis

• collagen thickening of subepithelial basement membrane
  14 July

  Increase subepithelial collagen
  Images
  collagenous colitis https://twitter.com/smlungpathguy/status/853997959943528448 https://twitter.com/UJoneja/status/1282814698338111490
  Definition
  Patchy thickening of subepithelial basement membrane Increase subepithelial collagen thickness : 10 microns or more / 0.01 mm (thickest in transverse colon); often spares rectosigmoid; lower border of collagen is irregular, extends into lamina propria and encircles capillaries, may be difficult to (...)

• colorectal epithelial polyps
  17 April, by admin

  Types
  colorectal epithelial polyps colorectal adenomas colonic tubular adenoma colonic villous adenoma colorectal hyperplastic polyp colorectal juvenile polyp colorectal Peutz-Jeghers polyp colorectal mixed hyperplastic adenomatous polyp
  See also
  colorectal polyps

• MSS/MSI-KRAS
  17 April

  Group of colorectal cancer

• MSS/MSI-BRAF
  17 April

  Group of colorectal cancer

• MSI-CIMP
  17 April

  CpG island hypermethylation
  See also
  CpG island hypermethylation

• MSI-Lynch
  17 April
• MSS-CIN
  17 April
• classic CIN pathway
  17 April

  Open references
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6678087/

• colorectal lipomatosis
  4 September 2019

  PO
  Definition : Development of multiple benign lipomas throughout the colon.

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