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目的：分析肝门部胆管癌的超声表现，探讨肛门部明管瘤术前超声评估的可行性。材料和方法：30例经手术和病理证实的肝门部胆管癌，术前均行彩超检查，并对其超声表现进行分析。结果：超声显示肛门区肿物26例（87％），其中结节型13例（5％），弥散型8例（31％），乳头型5例（19％）；按Bismuth分型判断胆管受累范围，26例中，24例（92％）与术中分型相符。超声对门静脉侵袭、肝动脉侵袭和肝脏转移诊断符合率分别为80％、20％和33％。结论：超声对肝门部胆管癌进行术前评估是可行的，尤其是对胆管受累范围和门脉侵袭情况的判定。
Objective: To analyze the ultrasonic manifestation of hilar cholangiocarcinoma and explore the feasibility of preoperative ultrasound evaluation of open anal canal tumor. Materials and Methods: Thirty patients with hilar cholangiocarcinoma confirmed by surgery and pathology underwent color Doppler ultrasound examination before operation, and their ultrasound findings were analyzed. RESULTS: Ultrasound showed 26 cases (87%) of tumors in the anal area, including 13 cases (5%) of nodular type, 8 cases (31%) of diffuse type, and 5 cases (19%) of papillary type; bile duct classification according to Bismuth classification. In the affected area, 26 cases (92%) were consistent with intraoperative classification. The coincidence rates of ultrasound diagnosis of portal vein invasion, hepatic artery invasion, and liver metastasis were 80%, 20%, and 33%, respectively. Conclusion: Preoperative assessment of hilar cholangiocarcinoma by ultrasound is feasible, especially for the extent of bile duct involvement and portal vein invasion.