Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Borderline enlargement of the cardiac silhouette is re - demonstrated . The mediastinal and hilar contours are otherwise within normal limits . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . The pulmonary vasculature is not engorged . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .