肝门周围胆管癌约占全部肝内外胆管癌的 75 % ,它与胆道囊性病变、硬化性胆管炎以及溃疡性结肠炎有关。 90 %的胆管癌是腺癌 ,表现为弥漫性浸润型生长 ,有时外观很难确诊。血清肿瘤标记物如 CEA、AFP和 CA19- 9等多属正常。术前评估的目的有三 :(1)检测远处转移 ;(2 )显示局部 Hilar cholangiocarcinoma accounts for about 75% of all intrahepatic and extrahepatic cholangiocarcinoma, which is associated with cholangiocarcinoma, sclerosing cholangitis and ulcerative colitis. 90% of cholangiocarcinomas are adenocarcinomas, showing diffuse infiltrate growth and sometimes difficult to diagnose. Serum tumor markers such as CEA, AFP and CA19- 9 are mostly normal. The purpose of preoperative assessment of three: (1) detection of distant metastases; (2) shows the local