The value of combining Dukes' stage and C-reactive protein to form a cumulative prognostic score was assessed in 147 patients undergoing potentially curative resection for colorectal cancer. The cancer-specific survival rates at 3 years for patients with a cumulative prognostic score of 0, 1 and 2 were 100, 77 and 40%, respectively (HR 4.76, 2.78-8.15, P<0.001).