A pyeloplasty procedure repairs ureteropelvic junction obstruction (UPJ), the most common type of blockage that causes hydronephrosis (build-up of fluid in the kidney).
There are two methods of pyeloplasty used at Boston Children’s: laparoscopy or robot-assisted laparoscopy. Both are minimally invasive procedures, but the robot-assisted approach allows surgeons to have better control of the instruments so they can more easily perform complex maneuvers. About half of the pyeloplasties performed at Boston Children’s are robot-assisted laparoscopy procedures.
During a robot-assisted pyeloplasty, very thin instruments are inserted into three or four small incisions. Operating with the aid of a tiny camera, surgeons remove the narrowed or obstructed part of the ureter (the tube connecting the bladder to the kidney) and reconnect the healthy portion to the kidney’s drainage system.
The success rate of pyeloplasty procedures is about 95 percent. After a robot-assisted pyeloplasty, children are usually able to go home the following day.