抄録
A 70-year-old woman visited our hospital for evaluation of epigastric pain. She had been treated for a gastric ulcer by her home doctor with H2-receptor antagonist or PPI for 30 years. An upper GI series revealed a gastroduodenal fistula from the lesser curvature to the prepyloric region and the duodenal bulb. Eighteen months later, endoscopic examination revealed a double pylorus without additional changes.