胆管癌是罕见的恶性肿瘤，可以发生于肝内外胆道的任何部位，最常累及肝管汇合处。大多分类系统将胆管癌分成肝内和肝外两类，后者进一步分为近端、中段及远端三型。中段胆管癌相当罕见，其治疗与近端胆管癌行肛门部切除或远端胆管癌行胰十二指肠切除的治疗方法相同。因此，作? Cholangiocarcinoma is a rare malignant tumor that can occur in any part of the intrahepatic biliary tract, most often involving the junction of the hepatic ducts. Most classification systems classify cholangiocarcinoma into intrahepatic and extrahepatic types. The latter are further divided into proximal, middle, and distal types. The middle bile duct cancer is rare and its treatment is the same as the treatment of proximal bile duct cancer with anal excision or distal bile duct cancer for pancreatoduodenectomy. So, for?