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Löffler Syndrome

by Harold R. Collard, MD

Löffler syndrome, a form of eosinophilic pulmonary disease (see Overview of Eosinophilic Pulmonary Diseases), is characterized by absent or mild respiratory symptoms (most often dry cough), fleeting migratory pulmonary opacities, and peripheral blood eosinophilia. Parasitic infections, especially Ascaris lumbricoides, may be the cause, but an identifiable etiologic agent is not found in up to one third of patients. The disease usually resolves within 1 mo. Treatment is symptomatic and consists of corticosteroids.

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