CEACAM5 and metastatic malignant neoplasm in the lymph nodes: Chi‐square analysis indicated that NPS had a statistically significant association with sex, age, BMI, CEA, CA19‐9, Borrmann type, tumor diameter, tumor location, pTNM stage, venous invasion, nerve infiltration, lymph node metastasis rate, vascular invasion, PNI, and SIS (P = 0.008, P = 0.002, P = 0.003, P = 0.009, P = 0.001, P < 0.001, P < 0.001, P = 0.041, P < 0.001, P = 0.001, P < 0.001, P < 0.001, P < 0.001, P < 0.001, and P < 0.001) (Table 3).