What is the cause of hydronephrosis on the left waist?

Ureteral cancer is a malignant tumor originating from ureteral epithelial tissue. With the development of the

disease, the tumor volume gradually increases,

which may block the ureter and block the urine discharge, thus causing hydronephrosis.

2

. Ureteral congenital dysplasia

If the sphincter of the ureter orifice of the patient has congenital dysplasia, the urine in the kidney may flow into the kidney after being discharged into the bladder through the ureter, causing hydronephrosis on the left side.

3. Ureteral cancer

Ureteral cancer is a malignant tumor originating from ureteral epithelial tissue. With the development of the disease, the tumor volume gradually increases, which may block the ureter and block the urine discharge, thus causing the above situation.