We report on 5 cases with an endoscopic aspect exceptionally described of ulcerated tumor-like gastritis associated with Helicobacter heilmannii. This rare but ubiquitary bacteria, belonging to the same family as Helicobacter pylori, is epidemiologically and structuraly different. When these endoscopic lesions are detected, Helicobacter heilmannii has to be looked for carefully. The treatment, which is the same than for Helicobacter pylori, must lead to complete repair of endoscopic and histologic lesions.