Ureteral duplication

Duplication of the ureters, usually called as the renal duplication. It was the most common anomaly of the urinary tract. Duplication can be any complete or incomplete and was generally accompanied by various risks and complications. Incomplete duplication was most frequently related along with ureteroureteral reflux or ureteropelvic junction obstruction of lower pole of the kidney. Complete duplication was generally associated with ectopic ureteral insertion, vesicoureteral reflux, ectopic ureterocele, or all are more frequent in girls compared with boys.

This means that they are having 2 ureters for one kidney that will drain separately into the bladder. The ureter along with the ureterocele usually drains the top half of the kidney and the duplicate may drain the lower half. Children who are having a ureterocele can also have an ureteral duplication. The ureter with the ureterocele can enter the bladder lower than the duplicate ureter, which will cause a backflow of urine into the higher ureter.


The main cause of ureteral duplication was unknown, even though in some cases have been seen in siblings, suggesting a genetic component. Duplicated ureter was most common in females. Yet, this may because of the higher frequency of urinary tract infections in the females, which may leads to a higher rate of diagnosis of duplicated ureter.


Ultrasound, diagnostic imaging procedure which will use a high-frequency of sound waves & a computer to create images of organs, blood vessels and tissues. Ultrasounds of the whole urinary tract & to view the internal organs as they function and to assess blood flow by the various vessels. Voiding cystourethrogram (VCUG) – child’s bladder was filled with contrast from the catheter and urination was watched to observe if reflux into the ureters occurs.