Management of ureteropelvic junction obstruction in infants.

The frequent use of fetal ultrasound is allowing early (prenatal) diagnosis of numerous uropathies previously delayed until the child either became symptomatic or had a palpable mass. We would anticipate an increasing number of neonates presenting for repair of obstructions, especially ureteropelvic junction obstruction. To evaluate our experience with this disorder in infants we reviewed our experience with ureteropelvic junction obstruction during the last 6 years in 16 infants less than 1 year old. Principles of evaluation, surgical techniques and results are presented. To date, no secondary procedures have been necessary and most neonates have shown dramatic improvement in the parenchymal mass and intrarenal anatomy.