Renal pelvis rupture after blunt abdominal trauma.

A 45-year-old male patient presented with rupture of the left renal pelvis after blunt abdominal trauma. The patient had preexisting bilateral megaureters with secondary obstruction of the pyeloureteral junction. The underlying disease was a persisting type III posterior urethral valve. Diagnosis of renal pelvis rupture and the underlying malformation was achieved sonographically and by abdominal CT scan. The left kidney was exposed at the time of admission and a pyeloplasty according to Anderson-Hynes was carried out. Secondarily the urethral valve was resected.