The prevalence of RA is around 0.3–1.2% (0.92% of Americans). Women are 2–3 times more susceptible than men. The prevalence of<unk>  in patients with RA depends on the method used for diagnosis: chest X rays (5%), high resolution CT scans (10–40%). A study showed 582 patients with RA and 603 subjects without RA were followed for a mean of 16.4 and 19.3 years, respectively. The lifetime risk of developing ILD was 7.7% for RA patients and 0.9% for subjects without RA. The risk of developing ILD was higher in patients with older age at RA onset, among male patients and for individuals with parameters that indicate more severe RA. Survival of RA patients diagnosed with ILD was worse compared to RA patients without ILD. ILD contributed approximately 13% to the excess mortality of patients with RA patients when compared to the general population.
Rheumatoid lung disease
Mineral dust airway disease
Alcoholic lung disease
Allergic bronchopulmonary aspergillosis
Idiopathic pulmonary fibrosis
Bronchiectasis
Alveolar lung disease
Plastic bronchitis