ENO2 and neoplasm: The tested tumor markers showed mild elevations, including neuron-specific enolase (NSE) at 30.6 ng/mL (reference range: <16.3 ng/mL), cytokeratin 19 fragment (CYFRA 21-1) at 4.67 ng/mL (reference range: <3.3 ng/mL), and carbohydrate antigen 72-4 (CA72-4) at 22.3 U/mL (reference range: <6.9 U/mL).