原发性输尿管癌的多层螺旋CT多期动态增强表现

Multi-phase dynamic contrast enhancement of primary ureteral carcinoma:a multi-spiral CT observation

目的观察原发性输尿管癌的多层螺旋CT(MSCT)多期动态增强表现,探讨其诊断价值及临床意义。方法收集经手术病理证实的原发性输尿管癌13例,其中男性11例,女性2例,对病灶行MSCT多期动态增强扫描。结果病灶强化峰值时间位于肾实质期8例,增强前后时间-密度曲线呈"速升-缓升-速降"型。3例位于皮髓质交界期,呈"速升-速降"型。2例位于肾盂期,呈持续缓升型。结论原发性输尿管癌MSCT多期动态增强具有一定特征,结合其他相关影像表现诊断不难。少数强化峰值位于肾盂期者需与原发性非特异性输尿管炎进行鉴别。

Objective To observe and evaluate MSCT multi-phase dynamic contrast enhancement features of primary ureteral carcinoma. Methods Thirteen cases with primary ureteral carcinoma with operative and pathologic identification were studied by MSCT multi-phase dynamic contrast enhancement. There were 11 males and 2 females.Results The peak enhancement of 8 primary ureteral carcinomas by MSCT multi-phase dynamic contrast enhancement were in the nephrogram phase; 3 cases in the corticomedullary phase, 2 cases in the pyelogram phase. Conclusion MSCT dynamic contrast enhancement features of primary ureteral carcinoma have some characteristics. It is easy to diagnose with other image signs. The main differential diagnosis of few primary ureteral carcinoma with con-tinuing enhancement pattern was primary non-specificity ureteritis.