[Spontaneous and traumatic rupture of the renal parenchyma in primary obstructive megaureter: a report of 2 cases].

Urinary extravasation in infants may occur secondary to a variety of congenital obstructive uropathic conditions. This condition has been reported most often in infants with posterior urethral valves and pelviureteral junction obstruction. We present two cases of perirenal urinary extravasation from the kidney due to primary obstructive megaureter. Clinical presentation, evaluation and treatment of this rare entity are discussed.