What is the recurrence of hydronephrosis after surgery?

There are many causes of hydronephrosis, so there are many different surgical methods to treat hydronephrosis. After the operation, the hydronephrosis of the patient often does not completely disappear, mainly because the hydronephrosis patient takes too long and the kidney function does not recover as well as initially. Therefore, if the patient has moderate or severe hydronephrosis, the operation may become mild hydronephrosis after the operation, but as long as it does not worsen, this situation is better. The reason for recurrence is its own surgical operation, to correct the patient's hydronephrosis causes, did not achieve radical cure. If the patient ureteral stricture, installation stent tube pulled out, stricture site will also grow granulation tissue, there will be scar hyperplasia, but also the formation of stricture. Of course, there will be recurrence after treatment, such as ureter with bladder joint site stenosis, after replantation surgery, patients assume that the future and then long stones, assuming that the joint site and then showed stenosis, will also show hydronephrosis. Therefore, hydronephrosis after surgery, some patients will relapse, but must be clear about the cause of recurrence, take different treatment and treatment.