GPT and metastatic neoplasm: The SLN-T and control groups did not significantly differ with respect to age, sex, histological grade, the characteristics of the primary tumor or the lymph nodes, distant metastasis, the levels of CEA, hemoglobin, alkaline phosphatase (ALP), bilirubin, creatinine, albumin, alanine aminotransferase (ALT) or aspartate transaminase (AST), surgical intervention for the primary and metastatic tumors or the number of cycles of chemotherapy received post-operation.