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Carbohydrate antigen 19-9 is a valuable prognostic factor in colorectal cancer patients with normal levels of carcinoembryonic antigen and may help predict lung metastasis

Lung MetastasisGastrointestinal OncologyMedicineColorectal CancerPathologyColorectal Cancer PatientsCarbohydrate Antigen 19-9OncologyRadiation OncologyLung CancerCancer Research