The tumor markers also showed favorable results with carcinoembryonic antigen < 0.5ng/ml (0–10ng/ml), carbohydrate antigen 199 10.72U/ml (0–37U/ml), carbohydrate antigen 72-4 3.70U/ml (0–6.9U/ml), and NSE 9.45ng/ml (0–15.2ng/ml). This evidence concerns the gene ENO2 and neoplasm.