Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . Moderate degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .