Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe enlargement of the cardiac silhouette is unchanged . The aorta is tortuous . Pulmonary vasculature is not engorged , and hilar contours are within normal limits . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is noted in the lung bases . Moderate degenerative changes are seen throughout the thoracic spine
    OUTPUT:
    
Unchanged moderate to severe enlargement of the cardiac silhouette . No acute cardiopulmonary abnormality .