<unk>  involves gradual exchange of normal lung parenchyma with fibrotic tissue. The replacement of normal lung with scar tissue causes irreversible decrease in oxygen diffusion capacity, and the resulting stiffness or decreased compliance makes<unk>  a restrictive lung disease.<unk>  is perpetuated by aberrant wound healing, rather than chronic inflammation. It is the main cause of restrictive lung disease that is intrinsic to the lung parenchyma. In contrast, quadriplegia and kyphosis are examples of causes of restrictive lung disease that do not necessarily involve<unk> .
Pulmonary fibrosis
Interstitial lung disease
Pneumoconiosis
Pulmonary hyperplasia
Pulmonary toxicity
Pulmonary interstitial emphysema
Alveolar lung disease
Emphysema