Table 1.

Primary thoracic complications of rheumatoid arthritis.

Anatomic component	Disease
Pleura	Pleuritis Pleural effusion Empyema Pleural thickening Pleural fibrosis Bronchopleural fistula Pneumothorax
Pulmonary parenchyma and interstitium	Necrobiotic rheumatoid nodule Interstitial lung disease Non-specific interstitial pneumonia Usual interstitial pneumonia Cryptogenic organizing pneumonia Idiopathic lymphocytic interstitial pneumonia Acute interstitial pneumonia Eosinophilic pneumonia Secondary amyloidosis
Airway	Cricoarytenoid arthritis Rheumatoid nodule involving the upper airway Bronchiectasis Follicular bronchiolitis Diffuse panbronchiolitis Constrictive or obliterative bronchiolitis
Pulmonary vasculature	Pulmonary hypertension Vasculitis Diffuse alveolar hemorrhage (capillaritis)