Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . Patchy calcification is noted along the aortic arch and there is similar mild aortic unfolding . The mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Surgical clips project along the base of the left neck . The lungs appear clear . Mild degenerative changes are similar along the thoracic spine . A few surgical clips are also seen on the right side . There has been no significant change .
    OUTPUT:
    
No evidence of acute disease .