CEACAM5 and neoplasm: Sex (P = 0.714), preoperative CEA levels (P=0.104), preoperative CA199 levels (P = 0.563), perineural invasion (P = 0.179), differentiation grade (P = 0.070), tumor shape (P = 0.735), and enhancement degree (P = 0.526) were not associated with MLM.