Intravenous urography and retrograde pyelography are the primary radiologic studies for detecting ureteral carcinoma but give limited information regarding stage of disease. Computed tomography (CT) and magnetic resonance imaging (MRI) delineate the extent of ureteral carcinomas with a high degree of accuracy by depicting the periureteral fat and presence or absence of lymphadenopathy. In selected cases, CT and MRI are valuable for assessing the presence or absence of tumor in a ureteral stump and for the differential diagnosis of ureteral obstruction. Five cases of ureteral carcinoma and 2 cases of stump carcinoma are presented with preoperative CT and/or MRI evaluation and staging.
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