Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged , unchanged . The aorta is tortuous , and the mediastinal and hilar contours are otherwise stable . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is demonstrated . There are mild degenerative changes noted within the mid thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .