INFO/WWW-LINKS: The inccidence of gastric cancer is decreased. Carcinoma of the somach involves in 50% the pylorus, 25% the lesser curve and in 10% the cardia. These usually adenocarcinomas may be a polypoid intramural mass, noninfiltrating but ulcerating, infiltrating and ulcerating, diffuse infiltrating process (linitis plastica). Predisposing factors: H. pylori, adenomatous polyps, pernicious anaemia, atrophic gastritis. Differential diagnosis