A 53-year-old man was referred for further examination of left hydronephrosis. He had undergone high anterior resection for sigmoid colon cancer about 2 years previously. Retrograde pyelography demonstrated a filling defect in the middle portion of the left ureter. Brushing cytology of the lesion was class IV. Left nephroureterectomy was performed. Histology indicated metastatic adenocarcinoma from colon cancer.