PURPOSE The significance of carcinoembryonic antigen(CEA),CYFRA21 1 and adenosine deaminase (ADA) in the diagnosis for malignant pleural effusions was studied.

• 目的 研究癌胚抗原(CEA)、细胞角质蛋白19(CYFRA211)和腺苷脱氨酶(ADA)对恶性胸腔积液的诊断意义。