Colon and rectum

• perforated colorectal cancer
  9 May

  perforation in colorectal cancer; perforation in colorectal carcinoma
  Open references
  Perforated colorectal cancers: clinical outcomes of 18 patients who underwent emergency surgery. 2021. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8275966/
  Clinicopathological Features of Perforated Colorectal Cancer. 2009. https://ar.iiarjournals.org/content/29/5/1681
  Perforation and Stage-II Colon Cancer: Is it Always High Risk?. 2008. (...)

• Nancy histologic index
  1 February

  Open references
  Nancy Index Scores of Chronic Inflammatory Bowel Disease Activity Associate With Development of Colorectal Neoplasia. 2019. PMID : #31085339#
  https://www.cghjournal.org/article/S1542-3565(19)30511-7/fulltext

• malignant colorectal polyps
  30 December 2022

  malignant colon polyps
  Open references
  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4239505/

• colorectal tubular adenoma
  28 December 2022

  Images
  Macroscopy : colorectal tubular adenoma https://twitter.com/Andrew_Fltv/status/1606416576491802632
  See also
  colorectal adenoma
  tubular adenoma

• colorectal neuroendocrine tumors
  26 October 2022

  PO
  Synopsis
  Well differentiated neuroendocrine tumor Monotonous regular cells with round or oval nuclei with salt and pepper chromatin and moderate eosinophilic granular cytoplasm Organoid architecture: tumor cells arranged in nests, trabecular or insular pattern (Oncologist 2016;21:1191)
  nuclear pleomorphism can be encountered ( endocrine atypia ) is not associated with tumor aggressiveness (Oncologist 2016;21:1191).
  Grading scheme is based on the proliferative rate (mitoses and (...)

• colorectal endometriosis
  20 July 2022

  Images
  colorectal endometriosis https://twitter.com/Andrew_Fltv/status/1548983222306062336 https://twitter.com/Gloria_SuraMD/status/1559827469770817536
  See also
  colorectal anomalies
  endometriosis

• active chronic colitis
  5 June 2022

  Etiology
  ulcerative colitis
  Crohn chronic colitis
  See also
  colitis

• colorectal mucosal ulceration
  5 June 2022

  See also
  colorectal anomalies
  colorectal mucosal ulceration

• active self limited colitis
  5 June 2022

  PO
  Synopsis
  inflammation of lamina propria (active much greater than chronic), edema, hemorrhage
  usually lacks features of chronicity (crypt architectural distortion, lymphoplasmacytosis, pyloric gland metaplasia, Paneth cell metaplasia in the left colon)
  neutrophil induced epithelial injury (cryptitis)
  severe cases have crypt abscesses, extensive necrosis, hemorrhage and microthrombi
  See also
  acute (...)

• acute colitis
  5 June 2022

  Definition : Acute colitis is an acute inflammation of the colon.
  See also : active colitis.
  Subtypes
  active self limited colitis

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