Blood examination showed severe inflammatory findings [white blood cell count, 16,500/μL (normal range 3590–9640/μL); C-reactive protein, 21.3 mg/dL (normal range 0.5–1.0 mg/dL)], but tumor markers such as carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9) were within the normal range. The gene discussed is CEACAM5; the disease is neoplasm.