CEACAM5 and colorectal carcinoma: In summary, our study demonstrated that the prognosis of patients with CRC after surgery was closely related to patient age, tumour differentiation, TNM stage, N stage, M stage, nerve invasion, vascular tumour thrombi, postoperative chemotherapy, preoperative obstruction, preoperative CEA level, preoperative CA 19 − 9 level, and other factors.