Eosinophilic pneumonia

Acute and chronic eosinophilic pneumonia are rare lung diseases, part of the spectrum of eosinophilic lung diseases. They are characterised by eosinophilia on bronchoalveolar lavage and infiltration of the interstitium. They may be idiopathic or secondary to infection, smoking, inhalational injury or drugs. Steroid therapy remains the mainstay of treatment of both disorders. The epidemiology, diagnosis, clinical features, radiology, and role of newer biologic agents being explored for treatment will be discussed