SYNCHRONOUS DOUBLE CANCER OF THE LARGE INTESTINE AND KIDEY-REPORT OF THREE CASES

Patient 1, a 70-year-old man, was seen at the hospital because of blood stool and was found having rectal cancer at close examination. Preoperative contrast enhanced CT scan of the abdomen revealed left renal cancer. Low anterior resection of the rectum and a left nephrectomy were simultaneously performed. Patient 2, a 63-year-old woman, was seen at the hospital because of tarry stool. Close exploration revealed cancer of the ascending colon. Abdominal contrast enhanced CT scan before operation revealed a left renal cancer. Right hemicolectomy and a left nephrectomy were performed on an one-step approach. Patient 3, a 59-year-old woman, was seen at the hospital because a stool examination was positive to the guaiac test. Close exploration revealed cecal cancer. Abdominal contrast enhanced CT scan before surgery revealed right renal cancer. Right hemicolectomy and a right nephrectomy were performed on an one-step approach. We experienced three cases of synchronous colorectal cancer and renal cancer in which renal cancer was detected by preoperative contrast enhanced CT scan of the abdomen for the colorectal cancer and both cancers were successfully treated by simultaneous operation.