Ureteropelvic Junction Obstruction

Ureteropelvic junction (UPJ) obstruction is a narrowing or blockage at the point where the kidney connects to the ureter, the tube that carries urine to the bladder; when the flow of urine is hindered, it can build up in the kidney.

Possible manifestations: It may involve pain in the flank or abdomen, urinary tract infections, blood in the urine, or, in some cases, be detected on imaging studies without clear symptoms.

When to seek care? An assessment is advisable in the case of recurrent lower back pain, repeated urinary tract infections, or suggestive findings on an ultrasound.

Which specialist handles it? Its management is handled by the urologist and the nephrologist, and in childhood by the pediatric urologist. Identifying the cause of the narrowing with a professional is important to protect kidney function.