Spontaneous perirenal urinoma associated with ureteropelvic junction obstruction in a child: a case report.

We report a case of a 10-year-old Taiwanese boy with a perinephric urinoma, whose health had previously been good, but who experienced a sudden onset of severe Left flank pain. Radiological examination revealed ureteropelvic junction obstruction with grade IV hydronephrosis and perinephric urinoma of the left kidney. ercutaneous drainagewas performed successfully to relieve these symptoms. ication of congenital obstruction of the urinary tract, and it following renal trauma.