ENO2 and neoplasm: Tumor markers were unremarkable: carcinoembryonic antigen (CEA) 3.780 ng/mL, carbohydrate antigen 19-9 (CA19-9) 8.03 U/mL, squamous cell carcinoma antigen (SCC) 0.6 ng/mL, neuron-specific enolase (NSE) 11.5 ng/mL, pro-gastrin-releasing peptide (ProGRP) 64.2 pg/mL, cytokeratin 19 fragment (CYFRA) below measurable limits, soluble interleukin-2 receptor (sIL-2R) 282 U/mL, duke pancreatic monoclonal antigen type 2 (DUPAN-2) below measurable limits, s-pancreas antigen-1 (SPAN-1) 7.5 U/mL, and cancer antigen 125 (CA125) 16.70 U/mL.