Clinical Analysis Of6Patients With Extrinsic Allergic Alveolitis

Objective:To explore the clinical manifestations, imaging features, diagnosis and managements of extrinsic allergic alveolitis (EAA)Methods:6patients with EAA admitted to The FIrst Affiliated Hospital, College of Medicine, Zhejiang University from October2009to March2012were reviewed retrospectively. Clinical manifestations, imaging features, diagnostic methods and managements were analyzed.Results:4cases had contacted allergens relatively clearly. Most of these patients experienced cough, expectoration, fever, chest tightness and shortness of breath. Chest CT lesions had various manifestations, including consolidation, thin film, cable shape film with high density, patchy or nodule shape, high density film, or military film in two pulmonary.4cases had total IgE rised,2cases had total IgA and IgG rised.5cases used corticosteroids as the treatment after they were diagnosed EAA clearly or suspiciously, and1case were divorced from allergens. All of them became better either clinical or imaging manifestations.Conclusion:most patients with EAA had allergen exposure history. The clinical manifestations and the results of X-ray and chest CT are no-specific and confused in patients with EAA. The cure rate may be improved by early diagnosis and corticosteroids treatment in time.