*, P < 0.05; †, Data are median with interquartile range in parentheses; BMI: Body mass index; NRS 2002: Nutritional Risk Screening 2002; CEA: Carcinoembryonic antigen; CA199: Carbohydrate antigen199; TNM: Tumor-node-metastasis; SUVmean: Mean standardized intake value; SUVmax: Maximum standardized intake value; MTV: Metabolic tumor volume; TLG: Total pathological glycolysis. This evidence concerns the gene CEACAM5 and neoplasm.