Sex, age, site of the primary tumor, BMI, CEA, CA19-9 at admission, simultaneous/metachronous liver metastasis, size of liver metastasis, extrahepatic metastasis, conversion treatment regimens, and lymph node metastasis of the primary tumor were analyzed and compared. This evidence concerns the gene CEACAM5 and metastatic malignant neoplasm in the lymph nodes.