What is vesicoureteral reflux?

Urine backflow: Vesicoureteral reflux is a condition where urine from the bladder reflexes in the ureter and the kidney there is a valve like mechanism at the junction of the ureter as it enters in to the bladder and this valve then prevents urine to back up in to the ureter and kidney during voiding. If this valve is not developed then urine backs up in to the ureter and the kidney during voiding or at rest.

Vesicoureteraral: Generally a congenital condition resulting in urine refluxing from the bladder back up to the kidneys. Some kids outgrow it but some need surgical correction.