Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is top normal . The aorta is tortuous . Mediastinal and hilar contours are unchanged . Lungs are clear . No pleural effusion , focal consolidation , or pneumothorax is present . Pulmonary vasculature is normal . There are multilevel moderate degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .