原发性输尿管肿瘤是泌尿系统较少见且诊断较困难的疾病。1987年10月至1997年10月收治诊断明确的原发性输尿管肿瘤18例，就诊断方法及临床意义进行探讨。临床资料一、一般资料：本组18例，男13例，女5例。年龄38－sl岁，平均56岁。肿瘤均发生在单侧输尿管，左侧11例，右侧7例； Primary ureteral tumors are less common and diagnosed urological diseases. From October 1987 to October 1997, 18 cases of primary ureteral tumors were diagnosed, and the diagnostic methods and clinical significance were discussed. Clinical data First, the general information: The group of 18 patients, 13 males and 5 females. Age 38-sl years old, average 56 years old. Tumors occurred in unilateral ureter, left in 11 cases, right in 7 cases;