Idiopathic inflammatory myositis-associated interstitial lung disease: ethnicity differences and lung function trends in a British cohort.

Objective: Interstitial lung disease (ILD) is an important feature of idiopathic inflammatory myositis (IIM). Factors associated with its development and progression remain incompletely understood. The authors report ethnicity differences and lung function trends that characterize the predilection for and natural history of ILD in a group of British patients with IIM.