AFP and metastatic neoplasm: A total of 239 patients were included [114 patients with high risk (serum AFP levels ≥ 15,000 ng/ml and/or metastatic tumors), 65 patients with medium risk (localized incompletely resected tumors, serum AFP levels < 15,000 ng/ml), and 60 patients with low risk (localized and completely resected tumors, serum AFP levels < 15,000 ng/ml)].