肝门部胆管癌MRI诊断价值分析(附64例报告)

目的探讨MRI对肝门部胆管癌的诊断价值。方法对经手术病理证实的肝门部胆管癌64例,采用MRI平扫、MRCP及动态增强扫描。结果 64例肝门部胆管癌均表现为肝内胆管不同程度"软藤样扩张"(MRCP),肝门区胆管狭窄、中断或腔内充盈缺损;42例MRI肝门区可见稍长T_1、稍长T_2的肿块影,22例未发现明确肿块;增强扫描42例可见肿块延迟期缓慢持续强化,22例表现为管壁增厚强化,管腔狭窄。结论增强前后MRI可以显示肝门胆管癌的特征性改变,如联合应用MRCP则有助于提高其定位、定性诊断准确率。

Diagnostic vaiue of MRI for hepatic hilar cholangiocarcinoma

Objective To investigate the value of MRI in the diagnosis of hepatic hilar cholangiocarcinoma. Methods Sixty-four patients with hepatic hilar cholangiocarcinomas confirmed by surgery or pathology underwent MRI using a 1.5-T superconductive MR system including conventional unenhanced MRI, MRCP and dynamic contrast-enhanced MRI with Gd-DTPA. Results Dilatation of the intrahepatic biliary tree with narrowing, occlusion or filling defects in the hepatic hilar bile ducts was noted in all 64 eases. Unenhanced MRI showed T1- and T2-hyperintense hilar masses in 42 patients and was normal in the remaining 22 patients. The hilar masses demonstrated slow, progressive and delayed enhancement patterns. There was enhancement of the thickened bile duct wall with luminal narrowing in the 22 patients without hilar masses. Condusion The characteristic MRI findings of enhancing hepatic hilar mass and bile duct wall thickening together with MRCP are valuable for diagnosing hepatic hilar cholangiocarcinomas.