After admission to the hospital, all tumor markers, such as serum carcinoembryonic antigen (CEA), neuron-specific enolase (NSE), alpha fetoprotein (AFP), prostate specific antigen (PSA), cytokeratin 19 fragment (Cyfra21–1), carbohydrate antigen 19–9 (CA19–9), and carbohydrate antigen 72–4 (CA72–4), were within normal ranges. Here, CEACAM5 is linked to neoplasm.