Ureteropelvic junction obstruction with associated renal anomalies

Ureteropelvic junction obstruction when associated with other congenital anomalies of the kidney often presents a diagnostic and therapeutic dilemma. These anomalies include fusion abnormalities, malrotation, renal ectopia and duplicated systems. We report our experience in the management of 27 patients with ureteropelvic junction obstruction and associated renal anomalies, including horseshoe kidney in 9, duplicated systems in 12, ectopic kidney in 5 and malrotation in 1.