报道１９８４～１９９４年采用Ａｎｄｅｒｓｏｎ－Ｈｙｎｅｓ高断性肾盂成形术治疗了３６只小儿先天性肾盂输尿管连接处狭窄引起的肾积水。手术后病理显示：肾盂输尿管狭窄的主要原因是胶原纤维增加，平滑肌排列紊乱。本文对手术时机的选择、手术成功的要点及术后肾功能恢复情况做了讨论。本组随访术后腹痛症状消失、血尿消失、肾积水有明显改善。手术成功率达９４．４％。 Reported 1984 ~ 1994 Anderson-Hynes high-definition pyeloplasty for the treatment of 36 children with congenital ureteropelvic junction stenosis caused hydronephrosis. Postoperative pathology showed that the main reason for ureteropelvic stenosis was the increase of collagen fibers and the disorder of smooth muscle arrangement. This article discusses the timing of surgery, the point of successful surgery, and the recovery of postoperative renal function. Follow-up of this group abdominal pain disappeared, hematuria disappeared, hydronephrosis significantly improved. Surgical success rate of 94.4%.