Abstract
A case of acinar cell carcinoma of the pancreas which was indistinguishable from extramucosal tumor of the stomach is reported. A 71-year-old woman was admitted to the hospital because of epigastralgia. A very movable tumor was palpated in the upper abdomen. Ultrasonography revealed a large mass as well as the compressed splenic vein and portal vein on dorsal position, but not on sitting position. Upper gastrointestinal X-p and gastric camera showed the compression extraluminally from the posterior wall of pylorus with mucosal ucleration. Abdominal CT showed a mass with high and low density areas. These findings offered a suspicion of extramucosal tumor of the stomach. Upon laparotomy, the tumor seemed to infiltrate into the transverse colon and pancreas head. So a pancreatoduodenectomy and a partial resection of transverse colon were performed. It was pancreas tumor with an extrapancreatic growth on cross section, but the main pancreatic duct and bile duct in pancreas were intact. The pathological diagnosis of the excised tumor was acinar cell carcinoma.
