[A case of carcinoid tumor of the common bile duct].

Majority of malignant neoplasms arising from the extrahepatic bile duct are adenocarcinomas. Carcinoid tumors at this site are extremely rare. We report a 67-year-old woman with malignant carcinoid tumor of the common bile duct. She presented with obstructive jaundice of 1 week's duration. Abdominal CT and ERCP revealed a common bile duct mass. She underwent Whipple's operation and was diagnosed as malignant carcinoid tumor histologically and immunohistochemically.