CEACAM5 and neoplasm: Tumor marker analysis revealed elevated levels of carcinoembryonic antigen (CEA) at 39.19 ng/mL, Carbohydrate antigen (CA) 19–9 at 346.5 U/mL, CA72–4 at 21.76 U/mL, and Cyfra211 at 4.9 ng/mL