CEACAM5 and neoplasm: Regarding preoperative tumour biomarkers, there were significant differences in carbohydrate antigen 125 (CA125) (P = 0.001) and carbohydrate antigen 199 (CA199) (P = 0.016) but not in carcinoembryonic antigen (CEA) (P = 0.769) or alpha fetoprotein (AFP) (P = 0.487).