Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate enlargement of cardiac silhouette is present . The aorta is tortuous . The pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is demonstrated . Moderate degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .