Pyeloplasty repairs a blockage at the ureteropelvic junction (UPJ), the point where the kidney connects to the ureter, which can cause urine to back up and damage the kidney over time. Using minimally invasive laparoscopic or robotic techniques, surgeons reconstruct the narrowed segment to restore normal urine drainage and protect kidney function.
Pyeloplasty is recommended when imaging confirms significant UPJ obstruction causing symptoms, recurrent infections, or declining kidney function. It is performed in both children (often congenital) and adults (often due to scarring or prior stones).