title: Collagenous gastritis.
abstract: A 25-year-old patient presented with epigastric pain, which on gastric biopsy revealed the characteristic appearance of collagenous gastritis. There was a thick prominent subepithelial band that was confirmed to be collagen with a Masson's trichrome stain. There was associated Helicobacter pylori gastritis but no evidence of a lymphocytic gastritis. The patient did not have watery diarrhea. Collagenous gastritis can occur in young patients, be restricted to the stomach, and can be associated with celiac disease.
authors.affiliation: Department of Pathology, University Health Network, University of Toronto, Ontario, Canada.
authors.forename: Richa
authors.initials: R
authors.lastname: Jain
authors.forename: Runjan
authors.initials: R
authors.lastname: Chetty
mesh_terms: D000328:Adult; D003094:Collagen; D005756:Gastritis / Q000150:complications / Q000382:microbiology / Q000473:pathology*; D016481:Helicobacter Infections / Q000150:complications; D006801:Humans; D008297:Male
chemical_list: D003094:Collagen