Hydronephrosis should be treated at a formal hospital's department of urology.

Hydronephrosis is due to some factor causing urinary tract obstruction, potentially seen in urological conditions such as stones, tumors, congenital abnormalities of the ureter, and other causes. These lead to the kidney producing urine that cannot be properly expelled. Dealing with this condition often requires intervention by the urology department, as hydronephrosis typically necessitates surgery.

In early stages, patients may need to adopt corresponding methods to address the specific causes. For instance, patients with stones might need extracorporeal shock wave lithotripsy, and open surgery might also be necessary; deformities of the ureter might need corrective surgery. These surgical treatments need to be performed in the urology department.