Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of cardiac silhouette is re - demonstrated . The aorta is tortuous . The pulmonary vasculature is normal , and the hilar contours are unremarkable . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities . Multilevel mild degenerative changes within the thoracic spine are again noted .
    OUTPUT:
    
No acute cardiopulmonary process .