Widespread small irregular lung opacities

May Be Caused by
 Common
Aluminum pneumoconiosis
Asbestosis
Atypical mycobacterial infection
Baritosis
Berylliosis
Chronic aspiration
Chronic bronchitis
Chronic obstructive pulmonary disease
Coal-worker pneumoconiosis
Hematogenous metastases
Hypersensitivity pneumonitis
Idiopathic pulmonary fibrosis
Interstitial pulmonary edema with pulmonary venous hypertension
Legionella pneumonia
Leukemia
Lung trauma
Lymphangitic carcinomatosis
Melanoma
Melioidosis
Pneumoconiosis
Pulmonary leiomyomatosis
Radiation
Recurrent pneumonia
Salmonella pneumonia
Sarcoidosis
Siderosis
Silicosis
Stannosis
Staphylococcal pneumonia
Talcosis
Thyroid carcinoma metastasis
Tuberculosis
 Uncommon
Alveolar microlithiasis
Amiodarone
Amyloidosis
Ascariasis
Asian panbronchiolitis
Blastomycosis
Bleomycin
Bronchiolitis
Bronchiolitis obliterans
Bronchiolo-alveolar carcinoma
Bronchopulmonary dysplasia
Busulfan
Coccidioidomycosis
Cryptococcosis
Cyclophosphamide
Cystic fibrosis
Dermatomyositis
Desquamative interstitial pneumonitis
Drug reaction
Eosinophilic granuloma
Fat embolism
Gaucher disease
Goodpasture syndrome
Histoplasmosis
Idiopathic pulmonary hemosiderosis
Lymphocytic interstitial pneumonitis
Lymphoma
Metallic mercury thromboembolism
Methotrexate
Methysergide
Neurofibromatosis
Niemann-Pick disease
Nitrofurantoin
Nonspecific interstitial pneumonitis
Noxious vapors
Oxygen toxicity
Paracoccidioidomycosis
Paragonimiasis
Polymyositis
Procainamide
Pulmonary lymphangiectasia
Pulmonary lymphangioleiomyomatosis
Pulmonary veno-occlusive disease
Rheumatoid lung disease
Riley-Day syndrome
Schistosomiasis
Scleroderma
Sjögren syndrome
Small airways disease
Systemic lupus erythematosus
Talc thromboembolism
Toxoplasmosis
Transient tachypnea of newborn
Tropical pulmonary eosinophilia
Tuberous sclerosis
Waldenström macroglobulinemia
Wilson-Mikity syndrome

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