DS = diagnostic surgery; PP = palliative procedure; CRS-HIPEC = cytoreductive surgery with hyperthermic intraperitoneal chemotherapy; BMI = body mass index; HTN = hypertension; COPD = chronic obstructive pulmonary disease; CEA = carcinoembryonic antigen; * = p < 0.05. This evidence concerns the gene CEACAM5 and chronic obstructive pulmonary disease.