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由于超声在显示胆管肿瘤的同时，也能显示胆管壁的形态及与邻近脏器组织的关系，因此有望对胆管癌术前分期作出诊断。本文根据肿瘤与胆管壁的关系、胆管壁形态、连续性、尤其外侧缘的形态改变等指标，确定了胆管癌壁浸润的三个程度，即未侵及浆膜下及浆膜层（以下简称浆膜）（S1），侵及浆膜（S2），侵及浆膜外（S3）的超声诊断标准;井报告了经超声显示出肿瘤，并经手术病理确认的61例胆管癌壁浸润程度的超声诊断结果。根据此标准，超声诊断正确率分别为S1达69％;S2达78％;S3达56％;总诊断正确率达67％（41／61）。本文还讨论了胆管壁受侵不同程度的声像图特征及提高诊断率的要点。超声对胆管癌壁浸润程度的判断为胆管癌术前分期诊断提供了重要依据。
Since ultrasound shows bile duct tumors, it can also show the shape of the bile duct wall and its relationship with adjacent organ tissues. Therefore, it is hopeful that a diagnosis of cholangiocarcinoma can be made before surgery. According to the relationship between tumor and bile duct wall, bile duct wall morphology, continuity, especially the lateral edge of the morphological changes and other indicators, to determine the degree of invasion of the bile duct cancer in three levels, that is not invading the subserosa and serosal layer (hereinafter referred to as Serosal (S1), invasion of the serosal (S2), invasion of extrasseous (S3) ultrasound diagnostic criteria; well report of ultrasound revealed tumor, and confirmed by pathology in 61 cases of bile duct cancer infiltration Ultrasound diagnosis results. According to this standard, the diagnostic accuracy of ultrasound is 69% for S1; 78% for S2; 56% for S3; the total diagnostic accuracy is 67% (41/61). This article also discusses the features of different degrees of acoustic image of the bile duct wall and the main points of improving the diagnostic rate. The ultrasound diagnosis of bile duct wall infiltration provides an important basis for preoperative staging of cholangiocarcinoma.