A 76-year-old man was admitted with acute exacerbation of COPD. He was administered bronchodilators, antibiotics and oral corticosteroids. Although his cough, sputum, fever and the laboratory data improved. wheezing and dyspnea remained. The chest CT revealed severe stenosis of the trachea and both main bronchi, which was thought to be the cause of the symptoms, and similar to the condition of "excessive dynamic airway collapse (EDAC)". We treated him with NPPV and his symptoms improved and he returned home. "EDAC"-like tracheobronchial stenosis with COPD treated with NPPV is rare.
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