Management of neonatal urinary ascites.

Four cases of neonatal urinary ascites are added to the previous reported 46 cases. Three are males with posterior urethral valves, and one is a female whose bladder was ruptured during traumatic breech extraction. The renal site of urine extravasation was verified by retrograde pyelogram in one instance and operative exploration in another. If relief of the lower urinary tract obstruction does not resolve the ascites, percutaneous or open nephrostomy tube placement on the side of extravasation is advised. With this approach all the patients have survived and now have normal renal function.