CEACAM5 and neoplasm: Blood investigation for the tumor markers showed lactate dehydrogenase (LDH): 226 U/L (normal: 140–280 U/L), beta‐human chorionic gonadotropin (β‐hCG): <2.39 mIU/ml (normal for non‐pregnant: <5.0 mIU/ml), alpha‐fetoprotein (AFP): 1.21 ng/ml (normal: <7.51 ng/ml), carcinoembryonic antigen (CEA): 0.65 ng/ml (normal: <3.0 ng/ml), and Cancer Antigen‐ 125 (CA‐125): 10.8 U/ml (normal: <35.0 U/ml).