Ureteropelvic Junction Obstruction

Ureteropelvic Junction Obstruction

Ureteropelvic junction (UPJ) obstruction is a blockage in the urine drainage of the kidney due to narrowing of renal pelvis to ureter junction. The renal pelvis, shaped like a funnel, collects urine generated by filtering out waste matter or excess water from the blood. The urine is pooled at the UPJ, and then flows down the ureters to the bladder.
In UPJ obstruction, the flow of urine is either restricted or stopped completely thereby increasing the risk of kidney damage. In most cases of UPJ obstruction, only one of the kidneys is affected. UPJ obstruction occurs in about 1 out of every 1,500 births. Males are affected at more than twice the rate of females, and the left kidney is affected more than the right.


  • Urinary tract infection with fever
  • Pain in the upper abdomen or back
  • Poor growth in an infant
  • Kidney stones
  • Lump in the abdomen
  • Blood in the urine
  • Vomiting


In most cases individuals are born with UPJ obstructions, indicates that structures of the ureter or kidney did not form correctly as the foetus was developing.
While in some other cases, UPJ obstruction could be inherited, but usually an obstruction appears in just a single family member.

There are different types of PUJ obstructions that may be present at birth:
• Unusual folds in the walls of the ureter
• The opening of the ureter is too narrow
• Twists may form along the path of the ureter
• An abnormal crossing of blood vessels can press on or distort the UPJ
• The ureter connects to the renal pelvis in too high a position, creating an abnormal angle between the ureter and kidney

Although less frequently, conditions such as kidney stones, upper urinary tract infections, an abnormally crossing blood vessel can also lead to UPJ obstruction.

It can be corrected surgically either laparoscopically or with robot in a minimally invasive way.

If you notice any symptoms of UPJ Obstruction or any other kidney disorder which could potentially lead to UPJ obstruction, then connect immediately with one of the leading Urologist in Hyderabad, Dr P Banu Teja Reddy.

Reach Us:
Give A Call: 91 630 377 1203
Book An Appointment: http://o7i.cf4.mytemp.website/book-an-appointment/

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