[Various aspects of uretero-ureteral reflux in incomplete ureteral duplication]

This study is a complete review of the common complications related to incomplete ureteral duplication, and based on three clinical cases. These complications include: Recurrent urinary tract infections with pyelonephritis; non functioning of one or both kidney units; Urinary lithiasis and the uretero-ureteral reflux secondary to retrograde ureteral peristalsis. Finally, the surgical treatment of the uretero-ureteral reflux depends on the clinical and radiological symptoms of the patients. Heminephrectomy in case of a non functioning renal segment. Excision of one ureteral segment converting an incomplete ureteral duplication into a bifid pelvis. Conversion of an incomplete duplication into a complete ureteral duplication if the common segment is near the bladder. Nephroureterectomy should be considered in case of non functioning kidney with type IV vesico-ureteral reflux.