Tumor biomarker tests (alpha fetoprotein, antigen 19-9, carcinoembryonic antigen, prostate-specific antigen, Cytokeratin 19 Fragment, carbohydrate antigen 24-2, squamous cell carcinoma antigen, and neuron-specific enolase) were all normal on admission, as were the baseline serum chemistry screening, peripheral blood count and the urinalysis. Here, ENO2 is linked to neoplasm.