Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild enlargement of cardiac silhouette . Aorta is tortuous . Mediastinal and hilar contours are otherwise unremarkable . The pulmonary vasculature is normal . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . There are mild to moderate degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .