Objective To explore the clinical value of combined detection of alpha fetoprotein(AFP),carcinoembryonic antigen(CEA),CA125 and CA19-9 in the diagnosis of malignant tumors in digestive system.

• 目的探讨联合检测血清中肿瘤标志物甲胎蛋白(AFP)、癌胚抗原(CEA)、糖类抗原125(CA125)、CA19-9对消化系恶性肿瘤的诊断价值。