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Pediatric Urology - Ureteropelvic junction obstruction

​​​​​​​​​Ureteropelvic junction (UPJ) obstruction occurs when your child's ureter becomes tightened, preventing flow of urine out of the kidney. 

The tube connecting the kidneys to the bladder is the ureter

This condition blocks the flow of urine into the bladder which can lead to kidney damage. Marshfield Clinic Urologists are experts in diagnosis and treatment of this condition.


A physician will recommend the course of treatment for UPJ obstruction by determining the severity of your child's condition. Options for treatment include:

Watchful waiting
In mild cases, a physician may opt to bring in the child for routine check-ups to monitor the condition as it may go away on its own over time. This will require an ultrasound, kidney X-ray or kidney scan.

In more severe cases, a surgical procedure can be done to remove the narrowed portion of the ureter and reconnect it near the kidney. The surgery can be done in an "open" form with a cut in the child's side or laparoscopically (using a small incision and robotic equipment).​

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