CEACAM5 and neoplasm: Pre-operative laboratory evaluation demonstrated normal levels of tumor markers, specifically: CA125 19.10 U/ml (reference range: <35.00 U/ml), Carcinoembryonic Antigen (CEA): 2.1 ng/mL (reference range: <5.0 ng/mL), Carbohydrate Antigen 19-9 (CA19-9): 15 U/mL (reference range: <37 U/mL).