Causes of multifocal or patchy airspace disease

What are some causes of multifocal or patchy airspace disease?

Pneumonia, aspiration, pulmonary contusion, and pulmonary hemorrhage when acute. Organizing pneumonia, mycobacterial infection, fungal infection, chronic eosinophilic pneumonia, PAP, vasculitis, and malignancy (lymphoma, lung cancer, and pulmonary metastasis) when chronic.

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