Eosinophilic Lung Diseases
Résumé
Eosinophilic lung diseases especially comprise eosinophilic pneumonia or as the more transient Loffler syndrome, which is most often due to parasitic infections. The diagnosis of eosinophilic pneumonia is based on characteristic clinical-imaging features and the demonstration of alveolar eosinophilia, defined as at least 25% eosinophils at BAL. Peripheral blood eosinophilia is common but may be absent at presentation in idiopathic acute eosinophilic pneumonia, which may be misdiagnosed as severe infectious pneumonia. All possible causes of eosinophilia, including drug, toxin, fungus related etiologies, must be thoroughly investigated. Extrathoracic manifestations should raise the suspicion of eosinophilic granulomatosis with polyangiitis.
Mots clés
Humans
Chronic Disease
Smoking
Lung Diseases
Diagnosis
Differential
Bronchoalveolar Lavage
Acute Disease
Allergic Bronchopulmonary/*diagnosis/immunology/therapy
Aspergillosis
Asthma/diagnosis/immunology/therapy
Churg-Strauss Syndrome/*diagnosis
Eosinophilia/complications/*diagnosis/immunology
Parasitic/*diagnosis/immunology/therapy
Pulmonary Eosinophilia/complications/*diagnosis/immunology/therapy