What is chronic eosinophilic pneumonia?

Uncommon disease, idiopathic, serious condition, middle aged-atopic women typically, insidious respiratory and constitutional symptoms (cough malaise...) Asthma (50-60%) Labs: increased IgE, peripheral eosinophilia. Imaging: diffuse peripheral infiltrates can be diagnostic, negative pulmonary edema) Biopsy: interstitial and alveolar eosinophilia, microabscesses, vasculitis, interstitial fibrosis BAL specimen shows eosinophilia, 10% resolve alone. responds quickly to corticosteroids, becomes asymptomatic within hours or days, but stays on Rx to prevent relapse