Pulmonary Function Tests

Disease

Parenchymal Asbestosis

Pulmonary Function Test Findings

Reduction in FVC; normal FEV1/FVC Ratio

Reduction in FEF (25%-75%)

Restrictive pattern with decreased DLCO

Or, mixed obstructive/restrictive pattern
(reduced FEV1/FVC associated with
reduced FVC)

Disease

Asbestos-Related Pleural Abnormalities

Pulmonary Function Test Findings

Often normal

Reduced FVC can be associated with
diffuse pleural thickening