EARLY GASTRIC-CANCER AND HELICOBACTER-PYLORI - 34 YEARS OF EXPERIENCEAT CHARITY HOSPITAL IN NEW-ORLEANS

Good survival rates have been reported for resected early gastric aden ocarcinoma (EGC) in patients found via screening procedures. However, the prevalence of Helicobacter pylori in EGC in unscreened populations is unclear. The major purpose of this investigation was to analyze th e clinical experience and incidence of H. pylori in unscreened patient s presenting with EGC at Charity Hospital over a 34-year period. From 1963 through 1997, the tumor registry at Charity Hospital compiled dat a on 2497 patients evaluated for gastric carcinoma. Of these patients, 26 (1%) had lesions that were confined to the mucosa or submucosa, i. e., T1N0M0 (American Joint Commission on Cancer classification). Patho logy specimens and medical records were retrieved for confirmation of diagnosis and retrospective analysis for H. pylori. H. pylori was anal yzed by Steiner staining and immunohistochemistry using a polyclonal a ntibody. EGC was detected in 12 men and 14 women with a mean age of 62 years. Upper gastrointestinal X-ray studies were performed on 19 of t he 26 patients and failed to conclusively demonstrate a lesion in any case. Endoscopy was performed on 22 patients, and preoperative biopsie s were positive in 95 per cent of these. Operative procedures included 2 local excisions and 22 subtotal and 2 total gastrectomies. No exten ded nodal dissections were performed. Microscopic evaluation revealed lesions limited to the mucosa in 63 per cent of cases and involving th e submucosa in 37 per cent of the cases. Of the 14 patients evaluable for H. pylori, 79 per cent were positive for the bacterium. The status of 2 patients is unknown, and only 1 patient died of the original gas tric cancer, for a disease-free survival of 96 per cent. The 5-year an d 10-year overall survival rates were calculated to be 50 per cent and 21 per cent, respectively, when all causes of death were taken into c onsideration. Median follow-up of the survivors was 64 months. Resecti on of early gastric carcinoma in unscreened patients without extended lymphadenectomy yielded excellent results. H. pylori was present in 79 per cent of cases. These data suggest an association between H. pylor i and EGG. Whether H. pylori infection is an etiologic factor in gastr ic cancer remains an area of active research.