Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size with a left ventricular configuration . There is mild unfolding of the descending thoracic aorta with calcification along the arch . The mediastinal and hilar contours appear stable . There are no pleural effusions or pneumothorax . Patchy opacities are streaky in association with mild - to - moderate relative elevation of the right hemidiaphragm , suggesting minor associated atelectasis or perhaps scarring . Otherwise , the lungs appear clear . Mild degenerative changes are noted along the mid thoracic spine .
    OUTPUT:
    
No evidence of acute disease .