Hydronephrosis can be caused by ureteral stones or ureteral stenosis, the operation time is usually about 1~3 hours, depending on the cause.
1. Ureteral stones: If the stones cause urethral obstruction, it will easily lead to hydronephrosis, often need to take laparoscopic minimally invasive surgery to treat the operation time is relatively short, usually about 1~2 hours can be completed.
2. Ureteral stenosis: If the ureter is severely narrowed, it is likely to lead to hydronephrosis, laparoscopic minimally invasive surgery is required to treat the operation, compared with the stone surgery will be longer, usually takes about 2 to 3 hours, if the ureter is severely narrowed, if necessary, the repair time will be longer.
Hydronephrosis should go to the hospital in time, identify the cause and cooperate with the doctor to take treatment.