Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is borderline enlarged . Thoracic aorta is diffusely calcified . The mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . No focal consolidation , pleural effusion or pneumothorax is seen . Previously noted right peribronchial opacification has improved . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .