Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours appear within normal limits aside from patchy calcification along the aortic arch . The lungs appear clear . There are no pleural effusions or pneumothorax . Small - to - moderate anterior osteophytes are noted along the mid - to - lower thoracic spine . There has been no significant change .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .