The Values of CYFRA in Pleural Effusion

The values of cytokeratin 19 fragment (CYFRA21-1)were measured in the pleural fluid of patients with lung cancer，with tuberculous pleurisy，and with benign diseases other than tuberculosis.CYFRA levels in malignant effu-lions were significantly higher than those in benign effusions.For malignant effu- sions the diagnostic sensitivity of CYFRA，specificity is diagnostic accuracy is ·It is suggested that the assay for CYFRA is use-ful took for the diagnosis of malignant effusions.