肝门区胆管癌CT与MRI的对比研究

Comparative study of CT and MRI on hilar cholangiocarcinoma

目的探讨CT与MRI在肝门区胆管癌的诊断价值。方法回顾性分析19例经手术病理证实的肝门区胆管癌的CT与MRI表现,评价两种检查方法对病灶的显示情况及定性诊断的准确率。结果CT与MRI对肝门区胆管癌定性诊断的准确率分别为84.21%、100%,19例肝门区胆管癌CT与MRI均表现为肝内胆管不同程度的扩张,CT显示肝门软组织肿块16例,胆管壁浸润0例,门静脉受累4例,淋巴结肿大5例,相应MRI显示分别为17例,2例,6例,7例。结论CT与MRI均是肝门区胆管癌的有效检查方法,MRI在显示肝门区肿块大小、范围、胆管壁浸润程度、门静脉受累以及淋巴结肿大方面比CT更具有价值。

Objective To evaluate the diagnostic value of CT and MRI in hilar cholangiocarcnorma. Methods CT and MRI findings of 19 cases with hilar cholangiocarinoma proved surgically and pathologically were reviewed retrospectively. The appearances of the lesion and the rate of accurate diagnosis of location by CT and MRI were compared. Results The accuracy of diagnosing location of hilar cholangiocarinoma with CT and MRI were 84.21% and 100% respectively. 19 cases with hilar cholangiocarinoma were found to have different degree of intrahepatic bile duct dilation by CT and MRI, CT demonstrated soft tissue mass at hilum in 16 cases, bile duct was infiltrated in 0 case, portal portal vein was involed in 4 cases, lymphadenopathy in 5 cases. MRI demonstrated 17, 2, 6 and 7 cases respectively. Conclusion Both CT and MRI are effective methods in detecting hilar cholangiocarinoma.MRl is more valuable than CT on presentation of size and range of mass, infiltration of bile duct, involvement of portal vein and lymphadenopathy.