Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . There are multilevel degenerative changes in the thoracic spine . Old bilateral rib fractures are noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .