Ureteropelvic junction (UPJ) obstruction is when there is a blockage where the kidney attaches to the ureter (the tube that carries urine to the bladder). The blockage slows or stops the flow of urine out of the kidney, which can cause pain, infection, and kidney failure. The physicians in UCLA Urology’s Division of Endourology are experts in prompt diagnosis and treatment of UPJ obstruction.
The ureter is the tube that carries urine from the kidney to the bladder. A narrowing or stricture of the ureter can stop the flow of urine and cause pain, infection, and kidney failure. Our experts specialize in advanced endoscopic and minimally invasive techniques to reestablish drainage from the kidney and preserve kidney function.
UPJ obstruction is typically present from birth. Ureteral strictures are more likely to occur after undergoing a surgery in the urinary tract. Other causes include:
UPJ obstruction and ureteral strictures can sometimes occur without symptoms but when symptoms are present, they include:
Comprehensive testing is required to properly diagnose someone with UPJ obstruction or a ureteral stricture:
Our experts utilize state-of-the-art surgical techniques to address UPJ obstruction or ureteral strictures:
A narrow silicone tube called a stent may be placed after these procedures to allow the area to heal properly while draining the kidney. The stent is removed a few weeks later in the office.
Detecting and treating the problem promptly can help prevent loss of kidney function. Most people recover well from surgery and have no long-term problems. A small percentage of patients may still develop kidney stones or infections in the affected kidney.