Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta remains tortuous and diffusely calcified . Mediastinal and hilar contours are unchanged . The pulmonary vasculature is not engorged . Linear opacities within the periphery of the right lung base likely reflect areas of scarring . No focal consolidation , pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .