there has been heightened interest in this process in adults because of its association with the connective tissue diseases , its development following toxic fume exposure , its occurrence as a result of chronic graft versus host reactions , and the increasing recognition of patients with idiopathic forms of the disease that have an insidious onset often confused with more common problems such as copd or idiopathic pulmonary fibrosis .
C0009782
connective tissue diseases
C0012634
disease