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目的：探讨肝外胆管癌的超声声像图特征及诊断价值。材料和方法：本文报道经手术、病理证实的５３例肝外胆管癌，其中４７例首先由Ｂ超确诊。结果：诊断符合率为８６７％，通过胆管癌的声像图特征及生长部位与手术、病理结果对照分析，揭示二者间的关系。文中着重对胆管癌的声像图表现、鉴别诊断及误诊原因作了阐述。结论：Ｂ超对胆管癌的诊断有很大的优越性和重要的诊断价值
Objective: To investigate the sonographic characteristics and diagnostic value of extrahepatic cholangiocarcinoma. Materials and Methods: This article reported 53 cases of extrahepatic cholangiocarcinoma confirmed by surgery and pathology, of which 47 cases were first diagnosed by ultrasound. Results: The diagnostic coincidence rate was 86.7%. The relationship between the two was revealed by the sonographic features of the cholangiocarcinoma and the contrast between the growth site and the surgical and pathological results. This article focuses on the sonographic appearance, differential diagnosis and misdiagnosis of cholangiocarcinoma. Conclusion: B-ultrasound has a great advantage and important diagnostic value in the diagnosis of cholangiocarcinoma