Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of cardiac silhouette is unchanged . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Lungs remain hyperinflated . No focal consolidation , pleural effusion or pneumothorax is present . Moderate multilevel degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .