Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is top normal . The mediastinal and hilar contours are unchanged . The pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . Minimal streaky left lower lobe atelectasis is present . Remote right - sided rib fractures are again demonstrated along with mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .