TOPOGRAPHIC DISTRIBUTION OF HELICOBACTER-PYLORI IN THE RESECTED STOMACH

Objectives The aim of this study was to elucidate the prevalence of He liobacter pylori and its distribution in order to clarify the frequenc y of H. pylori infection and the most appropriate site of endoscopic b iopsy for studies of H. pylori infection associated with different gas tric diseases. Designs and methods Swiss role mucosal strips from 275 resected stomachs, which included the greater curvature, anterior wall and lesser curvature of the antrum, incisura and corpus, were stained with haematoxylin-eosin and H. pylori antibody. Results The prevalenc e of H. pylori infection was 97% in duodenal ulcers, 98% in gastric ul cers, 98% in intestinal-type carcinomas and 99% in diffuse-type carcin omas. H. pylori was present at a rate of 100% in any sire in cases of duodenal ulcer, but was diffusely distributed in the antrum and patchi ly distributed in the corpus, The detection rate of H. pylori was 50-1 00% in gastric ulcers, 30-100% in intestinal-type adenocarcinomas and 63-100% in diffuse-type adenocarcinomas depending on the site of the s tomach examined. Conclusions The prevalence of H. pylori infection was very high in peptic ulcers of the duodenum and stomach and gastric ca rcinomas of Japanese patients. Biopsy specimens for evaluation of H. p ylori infection should be taken routinely from both the greater curvat ure of the antrum and corpus. Immunohistochemical staining should be u sed to assay for ii pylori when few organisms are present or eradicati on therapy has been used. Eur J Gastroenterol Hepatol 10:473-478 (C) 1 998 Lippincott-Raven Publishers.