Vesicoureteric Junction (VUJ)

What is the Vesicouretic Junction?

The vesicoureteric junction (VUJ) is the most distal portion of the ureter where it connects to the urinary bladder.

Kidney Stones

Symptoms of kidney stones can present in a variety of ways such as blood in the urine (haematuria), urinary tract infections or pain. The most severe of these is renal colic, which occurs when a stone passes from the kidney into the ureter. This causes obstruction to the outflow of urine from the kidney, and results in an increase in pressure and swelling within the kidney, causing sudden and severe pain in the loin. Usually, this requires a hospital admission and depending on the size and location of the stone, may require surgery.


Kidney stones are diagnosed using a detailed X-Ray or CT scan. This provides all the information required to determine the best treatment for your stone.

Stones may become impacted at three main locations within the ureter, corresponding to its narrowest points:

  1. Pyeloureteric junction (PUJ): between the kidney and its outflow duct, the ureter.
  2. At the level of the iliac blood vessels.
  3. At the vesicoureteric junction (VUJ): as the ureter drains into the bladder