A Case of Heterotopic Pancreatic Cancer in the Jejunum

We experienced a case of synchronous double cancer consisting of gastric cancer and heterotopic pancreatic cancer in the jejunum. A 64-year-old male visited the hospital because of abdominal pain on his right side. On close examination the patient was diagnosed as having a gastric cancer and underwent laparotomy. Laparotomy revealed a tumor in the jejunum 110cm anal side from the Treitz ligament. The jejunum formed a loop about 50cm long with infiltration into the serosa. Total gastrectomy and partial resection of the jejunum were performed. According to pathological diagnosis, the gastric lesion was poorly differentiated adenocarcinoma and the jejunal lesion was Heinrich type I heterotopic pancreatic cancer. Two cases of heterotopic pancreatic cancer in the jejunum have been seen in the Japanese literature so far, and this case may be the third report.