Fig. 2. 55-year-old, male patient with advanced gastric cancer.

A. Enhanced axial CT image shows hydronephrosis of left kidney (arrow) that was caused by periureteric metastasis. B. Antegrade pyelogram via percutaneous nephrostomy tube shows diffuse, long-segmental ureteric strictures (arrows) from proximal- to mid-ureter. C. Antegrade pyelogram immediately following metallic ureteral stents placement shows good flow of contrast medium through metallic ureteral stents into urinary bladder. D. Follow-up enhanced CT image obtained one month after metallic ureteral stents placement shows complete resolution of hydronephrosis of left kidney (arrow). CT = computed tomography