Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . The lungs are clear and hyperinflated , the latter suggestive of underlying COPD . No focal consolidation , pleural effusion or pneumothorax is identified . No acutely displaced rib fractures are noted . There are mild degenerative changes seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No displaced rib fractures identified . If there is continued concern for a rib fracture , then a dedicated rib series is recommended .