Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged . There is minimal calcification of the aortic arch . The pulmonary vasculature is normal . There is scarring within the lung apices . The lungs are otherwise clear . No pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .