Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . The aorta is mildly tortuous . The mediastinal and hilar contours otherwise are unremarkable . Pulmonary vascularity is normal and the lungs are clear . No pleural effusion or pneumothorax is present . There is scarring within the lung apices . Multilevel degenerative changes of the thoracic spine are present .
    OUTPUT:
    
No acute cardiopulmonary process .