Digestive system

• digestive nodular lymphoid hyperplasia
  3 March 2015

  Localization
  gastric nodular lymphoid hyperplasia
  duodenal nodular lymphoid hyperplasia
  intestinal nodular lymphoid hyperplasia
  colonic nodular lymphoid hyperplasia
  See also
  nodular lymphoid hyperplasia

• mastocyte count in digestive mucosa
  26 December 2014

  GI (especially colonic) biopsies can establish a diagnosis of SM in patients with GI symptoms. GI involvement is usually subtle and is often associated with prominent eosinophils, which may obscure the mast cell infiltrate.
  KIT and CD25 are invaluable markers for the diagnosis. Mast cell density in colonic mucosa from asymptomatic patients is highly variable.
  Counting mast cells in gastrointestinal (GI) mucosal biopsies is becoming an increasingly common practice. The primary reason for (...)

• digestive neuroendocrine tumors
  19 September 2014

  Neuroendocrine tumors of the gastrointestinal tract; digestive neuroendocrine neoplasms
  Classification
  In 2000, the World Health Organization (WHO) classification replaced “carcinoid” with the terms neuroendocrine tumors and neuroendocrine carcinomas to describe gastrointestinal neoplasms originating from the diffuse system of neuroendocrine cells.
  Along with developing tumor node metastasis staging and grading systems, the WHO classification provides an improved system for determining (...)

• digestive mucus producing cells
  1 May 2013

  Types
  goblet cells
  foveolar cells

• goblet cell
  1 May 2013

  goblet cells
  WP
  Definition: Goblet cells are glandular simple columnar epithelial cells whose function is to secrete mucin, which dissolves in water to form mucus. They use both apocrine and merocrine methods for secretion.
  The term goblet refers to these cells’ goblet-like shape. The apical portion is shaped like a cup, as it is distended by abundant mucinogen granules; its basal portion is shaped like a stem, as it is narrow for lack of these granules.
  There are other cells that (...)

• digestive intestinal metaplasia
  1 May 2013

  WP
  Definition: Intestinal metaplasia is the transformation (metaplasia) of epithelium, usually of the stomach or the esophagus , to a type that bears some resemblance to the intestine as seen in Barrett’s esophagus.
  Chronic infection caused by H. pylori infection in the stomach and GERD in the esophagus are seen as the primary instigators of metaplasia and subsequent adenocarcinoma formation.
  Initially, the transformed eptithelium bears resemblance to the small intestine; in the later (...)

• digestive cystic lesions
  1 March 2013

  Cystic Lesions of the Gastrointestinal Tract
  Cystic lesions of the gastrointestinal (GI) tract rarely occur and often demonstrate various pathologic findings.
  These lesions can be divided into several categories:
  congenital lesions,
  neoplastic lesions,
  miscellaneous lesions.
  Most of the cystic masses of the GI tract are discovered incidentally and usually appear as submucosal lesions. Patients can present with a variety of symptoms, including abdominal pain, bowel obstruction, (...)

• digestive mucosal dysplasia
  15 February 2013

  References
  Pascal R R,“Dysplasia and early carcinoma in inflammatory bowel disease and colorectal adenoma”, Human Pathol. 25: (1994), pp. 1,160–1,171.

• digestive epithelial tumors
  15 February 2013

  gastrointestinal epithelial neoplasm
  References
  Lewin K J, “Nomenclature problems with gastrointestinal epithelial neoplasm”, Am. J. Surg. Pathol. (1998), 22: pp. 1,043–1,047.
  Jass J R, Sobin L H,“Histologic typing of intestinal tumours”, 2nd Ed Springer-Verlag, Berlin 1989, p. 30.
  Riddell R H, Petras R E,Williams G T, Sobin L H,“Tumors of the intestines. Atlas of Tumor Pathology Third Series Fascicle #32”,Armed Forces Institute of Pathology,Washington DC, (...)

• gastric prolapse
  2 January 2013

  EndoAtlas

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