Colon and rectum

• PI3K-mutated colorectal adenocarcinoma
  27 November 2021

  See also
  PI3K

• colorectal adenocarcinoma biomarkers
  27 November 2021

  Types
  KRAS mutations
  NRAS mutations
  RAF mutations
  PI3K mutations
  Tumorigenesis pathways
  tubular adenoma pathway
  serrated pathway
  See also
  colorectal adenocarcinoma

• lymphoid polyposis in Gardner syndrome
  2 November 2021

  lymphoid polyp in Gardner syndrome
  lymphoid polyps in Gardner syndrome
  lymphoid polyp in Gardner syndrome
  Open references
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1343666/ (1974)
  https://pubmed.ncbi.nlm.nih.gov/5212464/
  https://pubmed.ncbi.nlm.nih.gov/5472667/

• colorectal mantle cell lymphoma
  2 November 2021

  PO
  Differential diagnosis
  inflammatory bowel disease
  MALT lymphoma / marginal zone lymphoma may present as multiple lymphomatoid polyposis has lymphoepithelial lesions negative for CD5 and cyclin D1
  Multiple lymphoid polyps benign germinal centers in children lymphoid polyposis in Gardner syndrome nodular lymphoid hyperplasia : benign associated with common variable immunodeficiency (...)

• colorectal neuroendocrine carcinoma
  1 October 2021

  poorly differentiated neuroendocrine carcinoma PO
  Microscopic (histologic) description
  Large cell: Organoid arrangement of cells larger than those in small cell carcinoma, with nuclear pleomorphism and hyperchromasia, prominent nucleoli, numerous mitoses and tumor necrosis
  Small cell: Resembles pulmonary small cell carcinoma, with sheets and nests of small ovoid cells with minimal cytoplasm, hyperchromatic nuclei with stippled chromatin, nuclear molding with peripheral (...)

• Russell body inflammatory polyp
  2 September 2021

  colorectal Russell body containing lesions; Colorectal mucosa with Russell bodies
  Colorectal mucosa with Russell bodies is a reactive inflammatory lesion composed of mature plasma cells, known as Mott cells which contain multiple intracytoplasmic eosinophilic globules.
  Russell bodies are eosinophilic spherical or globular cytoplasmic inclusions that accumulate in the rough endoplasmic reticulum of mature plasma cells. These plasma cells containing Russell bodies are also known as Mott (...)

• colorectal hypermucinous epithelium
  9 November 2020

  Example :
  sessile serrated adenoma

• serration throughout the crypt length
  9 November 2020

  See also : - exaggerated crypt serration
  Example
  sessile serrated adenoma (SSA / SSA/P)

• exaggerated crypt serration
  9 November 2020

  serration throughout the crypt length
  Example
  sessile serrated adenoma (SSA / SSA/P)

• colorectal foveolar metaplasia
  23 October 2020

  See also
  foveolar metaplasia

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