Children congenital urethral stricture hydronephrosis low fever how to cure

Congenital urethral stricture in children, hydronephrosis, low grade fever. If diagnosed as ureteral stricture caused by hydronephrosis, stricture site has serious impact on renal function, can first use double J tube to make kidney hydronephrosis drainage, and then elective surgery, ureteropyeloplasty.