Jacobs Journal of Nephrology and Urology

Congenital Ureteropelvic Junction Obstruction

Published on: 2017-08-03


Ureteropelvic junction (UPJ) obstruction is defined as an obstruction of the flow of urine from the renal pelvis to the proximal ureter. The condition is frequently encountered by both adult and pediatric urologists. The reported incidence of ureteropelvic junction (UPJ) obstruction is 1 in 500 live births and is more common in males [1]. Congenital abnormalities may be observed in both adults and children, but adults may also present with UPJ obstruction following previous surgery or other disorders that can cause inflammation of the upper urinary tract. Crossing vessels compressing or distorting the UPJ may be the sole cause of ureteral outflow obstruction. More commonly, however, they coexist with other cause of UPJ Obstruction.