Bilateral spontaneous asymptomatic urinoma: report of an unusual case.

Urinoma, defined as a collection of chronically extravasated urine, is uncommon in children. The condition is usually secondary to obstructive uropathy, commonly posterior urethral valves. Non-obstructive causes include trauma to the kidney or collecting system. Urinoma in the absence of obstruction or trauma is rare. This report describes one such boy who had bilateral spontaneous asymptomatic urinoma.