title: Helicobacter pylori infection and adenocarcinoma arising in Barrett's esophagus.
abstract: Helicobacter pylori infection has been implicated in the development of chronic active gastritis and gastric neoplasms (ie, mucosa-associated lymphoid tumors and adenocarcinoma). The potential association between esophageal H pylori infection with Barrett's esophagus-associated adenocarcinoma has not been previously studied. Nineteen cases of adenocarcinoma arising in Barrett's esophagus were examined for the presence of H pylori. Barrett's esophagus was defined by the presence of metaplastic specialized-type epithelium (gastric-type epithelium with goblet cell metaplasia) in the distal esophagus. To detect the presence of H pylori, 5-microm sections, from several tissue blocks in each case, were stained with routine hematoxylin-eosin, modified Giemsa, and an antibody directed against H pylori (Dako a/s, Denmark, Lot # 111061). Stained sections were examined independently by two pathologists. All three staining methods failed to show H pylori in any of the cases examined. Sections of Barrett's esophagus (with and without dysplasia), adenocarcinoma, and stomach (when available) were uniformly negative for the presence of H pylori. We conclude that neither gastric nor esophageal infection with H pylori is a requisite for the development of adenocarcinoma in Barrett's esophagus. Moreover, it is unlikely that a significant association between H pylori infection and Barrett's-associated adenocarcinoma exists.
authors.affiliation: Department of Pathology, Rhode Island Hospital and Brown University School of Medicine, Providence 02903, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Quddus
authors.forename: J D
authors.initials: JD
authors.lastname: Henley
authors.forename: R A
authors.initials: RA
authors.lastname: Sulaiman
authors.forename: T C
authors.initials: TC
authors.lastname: Palumbo
authors.forename: D R
authors.initials: DR
authors.lastname: Gnepp
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000209:etiology*; D000328:Adult; D000368:Aged; D001471:Barrett Esophagus / Q000150:complications*; D016481:Helicobacter Infections / Q000150:complications* / Q000175:diagnosis*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged