胆管癌的CT诊断

目的探讨胆管癌的CT诊断价值,分析CT误诊、漏诊的常见原因.方法收集23例经手术病理证实的胆管癌CT资料进行分析.结果周围型2例,肝门型10例,肝外胆管型7例,壶腹型4例.CT显示胆道肿块16例,梗阻部位18例呈截断型,5例呈突然狭窄型.肝内胆管21例呈中-重度扩张,扩张胆管17例呈树藤状,6例呈蟹足状,肝外胆管扩张11例,胆囊扩大7例,术前胆管癌误诊4例,漏诊1例.结论CT在胆管癌的诊断中有重要价值,但也存在一定的局限性.

CT Diagnosis of Biliary Duct Carcinoma

Objective To assecess the role of CT in the diagnosis and the reasons of misdiagnosis of biliary duct carcinoma.Methods 23 cases with biliary duct carcinoma pathologically comfirmed were reviewed.Results 2 cases were peripheral type,10 cases were major intrahepatic biliary duct type,7 cases were extrahepatic type and 4 cases ampullar type.The masses within biliary duct were showed by CT in 16 cases.The obstruction of biliary duct was cut off abruptly in 18 cases and narrowing sharply in 5 cases.The intrahepatic biliary duct indicated mild or marked expansion,of them,17 cases were showed as vine and 6 as segmental.The extrahepatic biliary duct were dilated in 11 and gallbladder dilatation in 7.4 cases were misdiagnosed and leaked diagnosis was in one cases by CT preoperation.Conclusion CT is valuable in diagnosis of biliary duct carcinoma,but it still has some limitations.