title: Collagenous gastroduodenitis.
abstract: Collagenous gastroduodenitis is a rare histopathologic entity characterized by marked subepithelial collagen deposition with associated mucosal inflammatory infiltrate. Only 4 cases have been reported, of which 3 had associated collagenous colitis. Collagenous gastroduodenitis without colonic involvement is exceptionally rare with only 1 case reported so far in the literature. We present a case of a 68-year-old woman with dyspepsia and mild anemia, who was found to have nodular gastric and duodenal mucosa on endoscopic examination. Histopathology showed collagenous gastroduodenitis. To the best of our knowledge, this is the second (and first in English literature) reported case of isolated collagenous gastroduodenitis.
authors.affiliation: Department of Internal Medicine, University of Connecticut, Farmington, CT 06032, USA. trustagi@resident.uchc.edu
authors.forename: Tarun
authors.initials: T
authors.lastname: Rustagi
authors.forename: Mridula
authors.initials: M
authors.lastname: Rai
authors.forename: John V
authors.initials: JV
authors.lastname: Scholes
mesh_terms: D000368:Aged; D000740:Anemia / Q000209:etiology; D003094:Collagen / Q000378:metabolism*; D004382:Duodenitis / Q000473:pathology*; D004415:Dyspepsia / Q000209:etiology; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D005756:Gastritis / Q000473:pathology*; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology
chemical_list: D003094:Collagen