Department of Urology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Urology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Urology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Urology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Urology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Retroperitoneal fibrosis; Metallic ureteral stent; Ureteral obstruction; Computed tomography ; Kidney function; Plastic stent; Case report ;