胆管癌的磁共振成像诊断

MRI Diagnosis of Cancer of Biliary Duct

目的:探讨磁共振成像(MRI)对胆管癌的诊断价值。方法:回顾性分析18例经手术、病理证实的胆管癌MRI检查资料,研究其MRI表现。结果:18例胆管癌表现为胆管行程区肿块,胆管中断、扩张,肝内胆管“软藤”征。肝内胆管癌3例,肝门部胆管癌10例,肝外胆管癌5例。肿块T1WI呈低信号,T2WI呈高信号,信号不均匀,动态增强扫描有延迟强化,MRCP检查所有病例均有不同程度胆管扩张或中断。结论:胆管癌的MRI和MRCP表现具有特征性,MRI及MRCP对胆管癌具有较高的诊断价值。

Objective To study the MRI diagnostic value on cancerof biliary duct. Methods The MRI examination data of 18 patients with cancer of biliary duct proved by operation and pathology were analyed retrospectively, and the manifestations of MRI were reviewed. Results Mass along the biliary duct can be seen in 18 patients. The bilary duct interruption and cholangiectasis also can be seen. The intrahepatic duct showed as soft rattan. 3 patients were ntrahepatic hiliary duct cancer, 10 patients were hepaticportal biliary duct cancer,and 5 patients were extrahepaticbiliary duct cancer. The mass showed as low signal on T1WI and high signal on T2WI. The signal intensity was nonhomogeneous. Gd-DTPA dynamic enhancement scan,there was delayted enhancement in tumor, All patients had cholangiectasis and biliary duct obstrtruction on MRCP. Conclusion MRCP and MRI manifestations of hiliary duct cancer had features, MRCP and MRI examination had high clinic value in diagnosing hihary duct cancer,