Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The chest appears hyperinflated . The lungs are clear . The bones appear demineralized . Mild - to - moderate degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
No evidence of acute disease . No significant change .