The authors present data on 13 patients operated on for the treatment of locally advanced colorectal cancer infiltrating the adjacent parts of the urinary tract. Based on prior diagnostic evidences, every surgical intervention has been indicated as an expected curative resection. All patients of this study underwent a curative resection. The origin of the advanced cancer was in 9 cases the sigmoid colon, in 3 cases the rectum and in 1 case the ascending colon. Beside the resection of the tumorous colon or rectum, a resection of the urinary bladder has been performed in 9, a nephrectomy in 3 and the resection of the ureter in 2 cases. An additional gynecological resection was made in 4 cases for tumors infiltrating the female internal genitals. No mortality and no serious complication needing reoperation occurred in these series. Based on their experiences of a series of 13 radically operated cases, the authors suggest extended multiple organ resection for the treatment of advanced colorectal cancer infiltrating the urinary tract.