【摘要】 目的 探讨胆管癌的MRI和MRCP表现，评价MRI结合MRCP对胆管癌的诊断价值。方法 对62例经手术病理证实的胆管癌，回顾性分析其MRI和MRCP表现。结果 肝内胆管癌11例表现为肝内不规则长T1、长T2浸润性信号,增强后呈中度环形强化。肝门胆管癌16例，MRI主要表现为肝内胆管扩张，在肝门部胆管突然截断、中断或充盈缺损，肝门部软组织肿块。肝外胆管癌35例，MRI表现为肝内胆管软藤样扩张，胆总管不同部位完全性梗阻。MRCP可显示扩张的肝内外胆管及梗阻部位的狭窄、中断、截断和管腔内的充盈缺损。结论 MRI和MRCP联合应用能较好地对胆管癌进行诊断，并能准确描述和评价胆管癌扩散及浸润范围。

     【关键词】 胆管肿瘤；磁共振成像；胰胆管造影术，磁共振

    Value of magnetic resonance imaging in dagnosing cholangiocarcinoma

    HAO Jin-gang，YUAN Shu-guang，ZHAO Xin-xiang，et al.Department of Radiology，The Second Affiliated Hospital of Kunming Medical College,Kunming 650101，China

    【Abstract】 Objective To investigate magnetic resonance imaging(MRI) and magnetic resonance cholangiopancreatography(MRCP) features of bile duct cancer.Methods 62 cases of bile duct cancer proved surgically were analyzed retrospectively.Results The characteristic appearance of intrahepatic cholangiocarcinoma (n=11) was a large with an irregular margin.Tumor was hypointensity on T1WI and hyperintensity on T2WI,and showed mild rim enhancement on enchanced MRI.The hilar cholangiocarcinoma (n=16) included intrahepatic biliary dilatation,narrowing;filling defect;interrupted or discontinued and soft tissue mass at hilum of liver.Extrahepatic cholangiocarcinoma (n=35) appeared as dilatation of intrahepatic like soft vine;and the segment of common bile duct discontinued completed.Of those imaging findings the dilated intrahepatic and extrahepatic bile duct;and above the obstructed common duct narrowing of MRCP;filling defect;interrupted or discontinued.Conclusion MRI,with a combination of MRCP techniques,for the diagnostic work-up and assessment,describe the extension and invasion of cholangiocarcinoma. ......