Whether hydronephrosis is prone to recurrence depends on the cause of the hydronephrosis. Common causes of hydronephrosis in clinical practice are as follows:

First, urinary tract stones. When a stone is lodged in the ureter or urethra, it can cause urinary obstruction. The urine produced by the kidneys cannot be expelled in time, leading to hydronephrosis. If the stones in the urinary system can be completely removed, it generally does not recur easily. However, if there are still quite a few stones in the kidney or bladder after clearing the urinary tract, it is more likely to recur, because the stones might move down, get lodged in the ureter or urethra again, and cause hydronephrosis.

Second, prostate enlargement. Hydronephrosis caused by prostate enlargement is generally more likely to recur because the prostate continues to grow in size. Even if the enlarged prostate is surgically removed, it still might lead to urethral stricture, thereby causing hydronephrosis again.