Sex, age, T stage, lymph node metastases, AJCC stage, lymphovascular invasion, perineural invasion, tumor size, tumor differentiation, CA 19–9, CEA, and postoperative pancreatic fistula were similar for CK7+/CK20- and non-CK7+/CK20- patients. This evidence concerns the gene CEACAM5 and metastatic malignant neoplasm in the lymph nodes.