간 외 담관의 선편평상피암 1예

A case report of adenosquamous cell carcinoma of the extrahepatic bile duct

Adenosquamous cell carcinoma of the extrahepatic bile duct is very rare and has been reported to account for approximately 2% of extrahepatic bile duct carcinomas. Adenosquamous cell carcinoma is more clinically aggressive than adenocarcinoma. Therefore, we present a case of solitary pancreatic metastasis of adenosquamous cell carcinoma of the extrahepatic bile duct. A 69-year old female patient underwent surgery and adjuvant chemoradiotherapy for adenosquamous cell carcinoma of the extrahepatic bile duct. Four years late, she admitted with abdominal pain and pancreatic mass in the abdominal computed tomography. Fine needle aspiration biopsy was consistent with metastatic adenosquamous cell carcinoma of the extrahepatic bile duct.