Dissolution of uric acid stones causing acute obstructing anuria in three consecutive infants.

We report on 3 infants with obstructive anuria due to bilateral uric acid stones. In all patients the precipitating cause of acute obstructive renal failure was choking of bilateral ureteropelvic junction with numerous small uric acid stones without cause pelvicaliceal dilatation. While the chemical dissolution therapy succeeded in dissolving the stones in 2 patients, unilateral percutaneous nephrostomy application associated with alkalization achieved dissolution of obstructing stones in the remaining 1 patient.