Thorax, abdominal CT: subcarinal LAPs, a mass in right hilus, eosophagial compression, pulmonary artery and pericardium invasion, a hipodens lesion in 1 cm diameter in liver (USG in terminal period: multiple lesions compatible with metastasis); bronchoscopy: inoperable bronchial carcinoma; biopsy: small cell carcinoma); upper GI tract endoscopy: N. CEA, α-FTP, PSA, freePSA, CA125, CA 19.9 all: N. The gene discussed is CEACAM5; the disease is bronchogenic carcinoma.