Methods: We used ELISA method to detect serum CYFRA21-1 of 82 pulmonary carcinoma patients, 18 laryngeal carcinoma patients and 74 digestive tract neoplasm patients.

• 方法：应用酶联免疫方法对82例肺癌、18例喉癌和74例消化道肿瘤测试血清CYFRA21-1水平。