原发性输尿管癌的多层螺旋CT诊断

MDCT Diagnosis of Primary Ureteral Carcinoma

目的:探讨多层螺旋CT(MSCT)容积扫描对输尿管癌的诊断价值。方法:搜集应用多层螺旋CT容积扫描并经病理证实15例原发性输尿管癌,对其MSCT影像征象进行分析。结果:15例原发输尿管癌发生于下段7例,上段2例,中段1例,左肾盂、输尿管、膀胱同时受累2例,输尿管下段及膀胱同时发生3例。MSCT上表现为病变输尿管管腔内软组织块或管壁不均匀增厚,管腔变窄,在多平面重建图像上呈柱状,3例同时发现腹膜后淋巴结肿大,影像所见与手术及病理结果完全符合。结论:MSCT容积扫描能清楚显示原发输尿管癌部位、范围,可进行肿瘤分期,是极好的影像学检查方法。

Objective：To assess the value of muhidetector row CT （MDCT） for the diagnosis of primary ureteral carcinoma. Methods： The imaging findings of MDCT of 15 primary ureteral cancers proved by pathology were analysed. Results： Of 15 primary ureteral cancers,7 cases involved lower segment of the ureter,2 cases involved upper segment, 1 case involved middle segment. 2 cases involved simultaneously left renal pelvis and ureter and urinary bladder. 3 cases involved ureter and bladder. MDCT could clearly demonstrate endoluminal mass in the ureteric lumen and thickened irregular ureteral wall with luminal stenosis in the transverse plane. The lesion showed long column-shape in the muhiphanar reformation. There were enlarged retroperitoneal lymph nodes in 3 cases. The imaging appearance was identical with that seen during operation and by pathology. Conclusion：MDCT can clearly demonstrate accurate location and extent as well as perform staging of ureteral cancer. It is excellent imaging modality for diagnosing the primary ureteral cancer.