Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta demonstrates diffuse calcifications . The mediastinal and hilar contours are unchanged and within normal limits . Pulmonary vascularity is normal . Lungs are clear . No pleural effusion or pneumothorax is present . Mild degenerative changes are present within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .