Serum tumor markers including alpha-fetoprotein (1.14 ng/mL), carbohydrate antigen-125 (CA-125; 13.17 u/mL), carbohydrate antigen 19-9 (3.96 u/mL), squamous cell carcinoma antigen (SCC-Ag; 0.754 ng/mL), carcinoembryonic antigen (CEA; 0.76 ng/mL), and human epididymal protein 4 (63.86 pmol/mL) were within normal ranges. Here, CEACAM5 is linked to neoplasm.