Percutaneous pyeloplasty in children: experience in three patients.

Three children with congenital ureteropelvic junction (UPJ) obstruction were treated with percutaneous pyeloplasty. A 22-gauge Chiba needle was placed within the renal pelvis, and the nephrostomy tract was dilated. A full-thickness incision was made endoscopically in the posterolateral wall of the narrowed UPJ. An internal stent was then placed and left in position for 6-8 weeks. Percutaneous surgery was successful in two of three cases. The unsuccessful procedure may have resulted from inadequate UPJ stenting. The authors believe percutaneous pyeloplasty can be safely and successfully performed in children with congenital UPJ stenosis.