Parenchymal lung involvement in eosinophilic syndromes (ES) is frequent; however, it is rarely accompanied by tracheobronchial lesions. The etiologies of ES are infectious [parasites and aspergillus (allergic bronchopulmonary ...

Hypereosinophilic syndrome is defined as persistent eosinophilia (>1500/µL for more than six months) associated with organ involvement, excluding secondary causes. It is a rare, potentially lethal disease that should be ...

Chronic eosinophilia is habitually associated with allergic, infectious, inflammatory, neoplastic and endocrine conditions and exposure to certain drugs and toxic agents. However, eosinophilic proliferation may be primary, ...