| Drugs and chemical exposures |
| Nitrofurantoin |
| Bleomycin |
| Cytotoxic drugs |
| Opiates |
| Radiation therapy |
| Smoke inhalation |
| "Vaping" (ie, use of electronic cigarette devices to inhale aerosolized substances) |
| Lipoid pneumonia |
| Vasculitic disorders |
| Systemic lupus erythematosus |
| Granulomatosis with polyangiitis (Wegener) |
| Juvenile idiopathic arthritis |
| Others |
| Hypersensitivity pneumonitis |
| Neoplasm |
| Pulmonary edema due to heart failure |
| Pulmonary infarction |
| Acute respiratory distress syndrome |
| Graft-versus-host disease |
| Poor inspiratory film |
| Near drowning event |
| Underpenetrated film |
