Chi‐square analysis indicated that as the total score of NPS increased, the levels of CEA and CA19‐9 in the patient's body gradually increased and the proportion of nerve infiltration, venous invasion, vascular invasion, and lymph node metastasis rate gradually increased, these factors have also been confirmed to be risk factors that are related to prognosis.49, 50, 51. Here, CEACAM5 is linked to metastatic malignant neoplasm in the lymph nodes.