Each kidney normally has one tube, called a ureter, that allows urine to be transported to the bladder. With ureteral duplication, a child is born with two ureters coming from the same kidney.
Some children with this abnormality have two entirely separate ureters coming from the same kidney (complete duplication). Others have two ureters that join together again before they get to the bladder (incomplete duplication).
Generally, no treatment is necessary unless there are issues with urination or kidney problems.
Symptoms & Complications
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Diagnosis & Testing
- A kidney/bladder ultrasound
- A voiding cystourethrogram performed with a special X-ray contrast material to track the flow of urine
- A CT scan or MRI performed often with a contrast material to better define the duplication, although these tests are performed more rarely
Treatment & Management
- When treatment becomes necessary because of issues related to a duplicated ureter, a pediatric urologist at UCI Pediatric Urology may suggest removal of part or all of a kidney (nephrectomy) that’s not working due to this abnormality.
- With a ureteroureterostomy, one of the duplicated ureters is split around and attached to the other ureter. This is done to the ureter that’s attached to the lower part of the kidney so that urine can flow normally from the upper portion of the affected kidney.
- If the main problem is urine leakage, ureteral reimplantation or ureteroureterostomy may be performed to split the affected ureter and attach it to the bladder or the non-leaking ureter.