Infection
Hypersensitivity pneumonitis
Related to rheumatic disease
Diffuse alveolar damage
Smoking-related disease
Related to drugs
Acute eosinophilic pneumonia
Sarcoidosis/berylliosis
Pneumoconioses
Acute injury related to drugs
Acute injury related to fumes and toxins
Acute injury related to rheumatic disease
Certain infections
Alveolar proteinosis
Vasculitis
Small-airways disease
Diffuse alveolar haemorrhage
Chronic eosinophilic pneumonia
Amyloidosis
Acute exacerbation of chronic disease
Cryptogenic organising pneumonia
Usual interstitial pneumonia
Acute interstitial pneumonia (idiopathic)
Non-specific interstitial pneumonia
Lymphoid interstitial pneumonia