In this study, the expression levels of AK098081, BC040303, CR749831, and BC037331 were associated with the degree of tumour differentiation (P = 0.032, P = 0.040, P = 0.022, and P = 0.037, respectively), whereas expression of BC037331 was negatively correlated with lymph node metastasis (P = 0.016) and serum CEA level in patients (P = 0.035). Here, CEACAM5 is linked to metastatic malignant neoplasm in the lymph nodes.