Some severe hydronephrosis needs surgical treatment, and generally postoperative hydronephrosis will not be completely eliminated.

It depends on whether you have other symptoms. If you have symptoms, you need to find the cause for treatment.

If it is only a simple slight water accumulation and there are no other symptoms, it is good to observe.

Hydrophilia is not an index to support surgery, but mainly depends on the influence on renal function and the influence of symptoms on life.