Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . A coronary artery stent is demonstrated . The aorta remains tortuous . Mediastinal and hilar contours are otherwise unremarkable . Lungs are hyperinflated with increased retrosternal clear space and flattening of the diaphragms suggestive of COPD . No pulmonary edema , focal consolidation , pleural effusion or pneumothorax is present . Diffuse demineralization of the osseous structures is noted . There are mild degenerative changes noted in the thoracic spine . .
    OUTPUT:
    
No acute cardiopulmonary abnormality . COPD .