CEACAM5 and neoplasm: In our study, within the factors related to the tumor, we observed that lymphatic invasion (P = 0.005 and P < 0.001), venous invasion ( P = 0.001 and P < 0.001), and preoperative serum CEA level ( P = 0.031 and P < 0.001) were independent risk factors associated with OS and DFS in stage II and III right-sided colon cancer.