At Which Stage of Gastric Cancer Progression Do Levels of Carcinoembryonic Antigen and Carbohydrate Antigen 19-9 Increase? Application in Advanced Gastric Cancer Treatment

摘要

PurposeSince there are no proven tumor markers that reflect the course of gastric cancer, carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9) are commonly used alternatives. However, the degree of progression that corresponds to an increase in these markers, and the values of these markers at different cancer stages, remains unclear.