Abstract
A 44-year-old woman was admitted to our hospital with epigastric pain. Abdominal computed tomography revealed a tumor with inflammation between the stomach and pancreas, and upper esophagogastroduodenoscopy revealed a benign ulcerating lesion at the gastric antrum, suggesting localized peritonitis due to a perforated gastric ulcer. Her condition improved with conservative management. However, the inflammation returned after 2 years and 5 months. Reactivation of the abscess or malignant tumor was suspected, and laparotomy was performed. A sclerotic tumor was found on the wall of the greater curvature of the stomach during the operation. The tumor was separate from the surrounding tissues and tumorectomy was performed. Microscopic findings revealed ectopic pancreas with chronic inflammation, and the pathological diagnosis was chronic abscess due to ectopic pancreas with pancreatitis. Although ectopic pancreas is asymptomatic in many cases, those with symptoms or suspected malignancy are candidates for surgery. We experienced a case of gastric ectopic pancreas with pancreatitis.