We encountered an adult patient with dyspnea, eosinophilia and bronchiolitis. He was diagnosed as having diffuse panbronchiolitis, and was treated with erythromycin for 3 years, but his symptoms had gradually worsened. Bronchoalveolar lavage showed marked eosinophilia, and video-assisted thoracoscopic lung biopsy revealed chronic bronchiolitis with associated eosinophilic lung disease (eosinophilic bronchiolitis). To our knowledge, no case of eosinophilic bronchiolitis has been reported in the literature.
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