先天性肾盂输尿管连接部狭窄是引起原发性肾积水的常见病因。我院自1993～1997年共手术治疗由连接部狭窄所致肾积水患者56例。现将其分析如下。 1 资料与方法 本组56例,其中男性占32例,女性占24例。男女比例为1.5∶1。年龄为8个月～40岁,其中年龄为14岁以下的为17例,平均年龄为18岁。经B超、肾图、ivp诊断为双侧肾盂输尿管连接部狭窄为5例,左侧肾盂输尿管连接部狭窄为32例,右侧肾 Congenital ureteropelvic junction stenosis is a common cause of primary hydronephrosis. In our hospital from 1993 to 1997, a total of 56 patients with hydronephrosis due to stenosis caused by the junctional joint surgery. Now analyze it as follows. 1 Materials and Methods The group of 56 cases, of which 32 were males and 24 females. Male to female ratio of 1.5: 1. The age ranged from 8 months to 40 years, of which 17 were under 14 years of age with an average age of 18 years. B ultrasound, renal map, ivp diagnosis of bilateral ureteropelvic junction stenosis in 5 cases, the left ureteropelvic junction stenosis was 32 cases, the right kidney