[A case of mucoid impaction of bronchi (MIB) due to Schizophyllum commune].

A 51-year-old woman was admitted because of a productive cough. Atelectasis of the left upper lobe and eosinophilia were noted. The atelectasis was resolved after bronchoscopic removal of the mucous plug. Pathologically, it consisted of eosinophil accumulation with hyphae. Cultures of sputum samples revealed Schizophyllum commune. We diagnosed this case as mucoid impaction of bronchi due to S. commune. Eight months later, a productive cough developed again. Chest radiography showed atelectasis of the right middle lobe. Cultures of bronchial washings yielded S. commune and Aspergillus niger. The atelectasis was resolved by four months of administration of itraconazole (200 mg daily).