Colon and rectum

• megacolon
  25 August 2017

  Images
  toxic megacolon https://twitter.com/mb_Pathology/status/901096347499061248

• colorectal metastasis
  1 July 2017

  Examples
  endometrial stromal sarcoma metastatic to colon https://twitter.com/KristenStashek/status/877954811601108995
  See also
  colorectal tumors colorectal polyps
  metastasis

• endometrial stromal sarcoma metastasis to colon
  1 July 2017

  endometrial stromal sarcoma metastatic to colon
  Images
  endometrial stromal sarcoma metastatic to colon https://twitter.com/KristenStashek/status/877954811601108995
  See also
  colorectal tumors colorectal polyps

• rectal well differentiated neuroendocrine neoplasia
  27 June 2017

  Images
  Rectal polyp : Well differentiated neuroendocrine neoplasia https://twitter.com/Konzult_/status/879499793030164482

• Campylobacter colitis
  16 June 2017

  Images
  Campylobacter colitis https://twitter.com/GIPathologyURMC/status/875380864267538432
  See also
  colitis infectious colitis

• revised Vienna classification of colorectal epithelial neoplasias
  15 June 2017

  Open references
  Efficacy of the revised Vienna Classification for diagnosing colorectal epithelial neoplasias.
  Tominaga K, Fujinuma S, Endo T, Saida Y, Takahashi K, Maetani I.
  World J Gastroenterol. 2009 May 21;15(19):2351-6.
  PMID: #19452577# Free
  Molecular validation of the modified Vienna classification of colorectal tumors.
  Sugai T, Habano W, Uesugi N, Jiao YF, Nakamura S, Sato K, Chiba T, Ishii M.
  J Mol Diagn. 2002 Nov;4(4):191-200.
  PMID: #12411586# Free
  The Vienna (...)

• colonic amyloidosis
  14 June 2017

  Images
  Colonic amyloidosis with Congo red stain https://twitter.com/ARP_Press/status/874260243965980672
  See also
  colonic anomalies
  amyloidosis

• hemorrhagic colitis
  14 June 2017

  Definition: Hemorrhagic colitis is a pattern of injury commonly associated with hypoperfusion due to vascular injury/ hypovolemia, infections (E. coli 0157 and other serotypes, Shigella and Klebsiella oxytoca) and certain drugs (antibiotic, alpha-interferon, hyperosmolar medication formulations and other drugs associated with mucosal ischemia).
  See also
  colitis

• colorectal dendritic cell sarcoma
  14 June 2017

  Images
  colonic dendritic cell sarcoma, CD21 + https://twitter.com/kriyer68/status/873639509400969217
  See also
  colorectal tumors
  dendritic cell sarcoma

• BRAF-mutated colorectal adenocarcinoma
  15 May 2017

  BRAF-mutated colorectal carcinoma
  BRAF-mutated MSI colorectal carcinoma
  BRAF mutation in colorectal cancer is associated with microsatellite instability (MSI) through its relationship with high-level CpG island methylator phenotype (CIMP) and MLH1 promoter methylation.
  In a study, no evidence existed for a differential prognostic role of BRAF mutation by MSI status (P(interaction) > .50). (#23878352#)
  Combined BRAF/MSI status in colorectal cancer is a tumor molecular biomarker for (...)

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