CEACAM5 and neoplasm: The laboratory test results for tumour markers were as follows: carbohydrate antigen 125 (CA-125), 136.89 U/mL (reference range: 0.00–35.00 U/ml); the levels of other tumour markers, such as carcinoembryonic antigen (CEA), carbohydrate antigen 199 (CA-199), and alpha-fetoprotein (AFP), were normal.