A case of colon metastasis after resection of bladder cancer

Abstract

A man in his seventies who had undergone preoperative chemotherapy for bladder cancer and pulmonary metastasis followed by transurethral resection of the bladder tumor had been followed in the clinic. When about 8 months had elapsed after the operation, an abdominal CT scan showed swelling around the left common iliac artery and a tumor shadow in the ascending colon. Further a colonoscopy disclosed a type 1 tumor at the ascending colon. We performed right hemicolectomy for the ascending colon tumor and at the same time lymph node dissection around the left common iliac artery was done. As a result, both the ascending colon tumor and lymph nodes swelling around the right common iliac artery were histopathologically diagnosed as metastasis of bladder cancer.
Since metastatic colon cancer is rare, this case is presented here with some bibliographical comments.