Eosinophilic Lung Disease: A Review

The terms 'eosinophilic pneumonia' and 'eosinophilic lung disease' loosely describe a heterogeneous group of pulmonary diseases of varying aetiologies and severity. The diseases are characterised by infiltration of lung parenchyma by eosinophils; peripheral eosinophilia is not required for diagnosis. In this article; major clinical entities are appraised with respect to clinical; pathological and radiological features. Diseases without pulmonary infiltration or radiographic abnormalities; such as allergic asthma; are not included in this review