Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . The lungs appear clear . Vascular calcifications are widespread . The bones are probably demineralized to some degree . There is slight degenerative change throughout the thoracic spine . There are healed fractures of the right anterior second and right posterior sixth ribs .
    OUTPUT:
    
No evidence of acute injury .