Ureteropelvic Junction Stenosis

Ureteropelvic junction stenosis (UPJ stenosis) is a narrowing in the area where the kidney connects with the ureter, the tube that carries urine to the bladder. This narrowing makes it harder for urine to pass normally and can cause it to build up in the kidney.

Common symptoms: pain in the flank or the back, repeated urinary tract infections, blood in the urine, and, in children, it is sometimes detected before symptoms appear.

Common causes: it can be congenital or develop from inflammation, scarring, or compression of the area.

Which specialist treats it? The urologist is the one who evaluates and follows up on this condition. With persistent low back pain or frequent urinary tract infections, the recommended step is to seek professional guidance.