肾盂输尿管连接部梗阻(ureteropelvic junctionobstruction,UPJO)是先天性肾积水的主要原因,男女发病率为2∶1,2/3发生在左侧,儿童常见[1],由于其病变过程缓慢,部分病人到成人才发病。一经明确诊断,均应行手术治疗[2],处理不当,并发症发生率增加[3]。本文总结我院1985-01~2002- Ureteropelvic junction obstruction (ureteropelvic junctionobstruction, UPJO) is the main cause of congenital hydronephrosis, male and female incidence of 2: 1, 2/3 in the left, common in children [1], due to its slow pathological changes, part of Patient to adult onset. Once diagnosed, surgical treatment should be performed [2], improper handling, an increase in the incidence of complications [3]. This article summarizes our hospital from 1985-01 to 2002-