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Conditions We Treat: Ureteropelvic Junction Obstruction

The ureter is a long tube that carries urine from the kidney to the bladder. Ureteropelvic junction obstruction occurs when it becomes blocked by scar tissue, kinking, a blood vessel or, more rarely, a tumor

Ureteropelvic Junction Obstruction: What You Need to Know

medical illustration of male kidneys
  • Ureteropelvic junction obstruction can cause flank plain on the affected side. For some, the pain worsens shortly after drinking alcohol, coffee or other fluids.
  • Some people are born with the obstruction, but others develop it over time with age or following trauma.
  • Ureteropelvic junction obstruction can harm kidney function.
  • Laparoscopic pyeloplasty, a minimally invasive surgery, can be used to clear the blockage.

Patient Resources



Why choose Johns Hopkins for treatment of ureteropelvic junction obstruction?

Mohamad Ezzeddine Allaf, M.D.

Our Physicians

Rely on the expertise of our physicians to help manage ureteropelvic junction obstruction.

doctor talking with patient

Our Treatments

Our experts have pioneered robotic and minimally invasive surgical techniques to provide patients with better results and less downtime following treatment for ureteropelvic junction obstruction.

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