Chest ImagingChronic eosinophilic pneumonia
an idiopathic condition characterized by extensive filling of alveoli by a mixed inflammatory infiltrate consisting primarily of eosinophils. Chronic eosinophilic pneumonia is usually associated with an increased number of eosinophils in the peripheral blood. Clinically, patients present with fever, cough, weight loss, malaise and shortness of breath. Symptoms are often severe and last 3 months or more.
Radiographically, chronic eosinophilic pneumonia is characterized by the presence of homogeneous peripheral air-space consolidation (Fig.1). This pattern can remain unchanged for weeks or months, but chronic eosinophilic pneumonia responds promptly to the administration of steroids. CT shows patchy air-space consolidation with a peripheral distribution (Fig.2).
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Chest radiograph in a patient with chronic eosinophilic pneumonia demonstrates bilateral peripheral areas of air-space consolidation.
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Chronic eosinophilic pneumonia, Fig.1 | | Chronic eosinophilic pneumonia, Fig.2 | |