Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta remains tortuous . The mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is not engorged . Lungs remain hyperinflated without focal consolidation compatible with underlying COPD . No pleural effusion or pneumothorax is present . Moderate multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .