Tumor marker evaluations were also performed, and carcinoembryonic antigen, carbohydrate antigen 19–9, carbohydrate antigen 125, squamous cell carcinoma-associated antigen, cytokeratin 19 fragment, neuron-specific enolase, carbohydrate antigen 72–4, tissue polypeptide antigen, carbohydrate antigen 242, and tumor supplied group of factors were positive. Here, ENO2 is linked to neoplasm.