Why mild hydronephrosis

Mild hydronephrosis may be caused by congenital abnormalities, urine reflux, urinary tract obstruction, etc.

1. Congenital abnormalities

If the anatomical structure of the kidney is abnormal, such as abnormal position of ureteral incision, stricture of ureteral orifice, etc., urine may accumulate between the renal pelvis and ureter, forming mild hydronephrosis.

2. Urine reflux

Poor pulsation function, abnormal urethral function, etc. cause urine to flow into the kidney, so that urine accumulates in it, so there will be mild hydronephrosis.

3. Urinary tract obstruction

Urinary tract obstruction can be caused by urethral stricture, stones, tumors, etc., which will hinder urine from flowing through the urethra from the kidney, thus causing mild hydronephrosis.