Curative resection of ureteral metastasis of rectal cancer: a case report and review of literature.

The metastasis to the ureter in colorectal cancer had been recognized at the stage of an autopsy. These days, according to the progression of diagnostic modalities, a few cases of long-time survival after curative surgery of metastatic ureteral tumor of colorectal cancer were reported. We present a case of a metastatic ureteral tumor of rectal cancer who had 32 months of recurrence-free survival after extirpation. After preoperative chemoradiotherapy, a 47-year-old man underwent laparoscopic low anterior resection and left unilateral pelvic node dissection for lower rectal cancer. He underwent several metastasectomies for recurrent tumors in the liver and lung. At the 42nd postoperative month, a contrast-enhanced CT scan showed thickening of the ureteral wall and left hydronephrosis. Transureteroscopic biopsy revealed metastatic adenocarcinoma of rectal cancer. At the 52nd postoperative month, partial ureteral resection and vesicoureteral neo-anastomosis were performed after confirming negative resection margin with rapid intraoperative pathology. He has 32 months of recurrence-free survival after metastasectomy of the left ureter. We review the literature presenting surgery of the metastatic ureteral tumor of colorectal cancer. Although it is a rare recurrence pattern, curative resection of ureteral metastasis might provide a possibility of long-time recurrence-free survival in such patients.
(© 2021. Japanese Society of Gastroenterology.)