Most of us are born with two ureters, one from each kidney to drain urine into the bladder. Some (1 in 125 people), on the other hand, have two ureters draining a kidney. This is called "duplex anomaly" of the kidney. A "duplex anomaly" can be associated with a variety of conditions that can affect the kidney health. One of these conditions is referred to as "ureterocele."…more