ENO2 and neoplasm: Subsequent testing of tumor markers revealed carcinoembryonic antigen (CEA) at 4.63 ng/mL, cytokeratin 19 fragment (CYFRA 21–1) at 4.45 ng/mL (normal range: 0–3.3 ng/mL), neuron-specific enolase (NSE) at 14.89 ng/mL, carbohydrate antigen 125(CA125) at 11.9U/mL, and carbohydrate antigen 153(CA153) at 21.10 U/mL.