Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is again mild - to - moderately enlarged . The mediastinal and hilar contours appear unchanged , again noting calcifications along the aortic arch . The lungs are clear . There are no pleural effusions or pneumothorax . Mild rightward convex curvature is centered along the mid thoracic spine with mild degenerative anterior osteophyte formation .
    OUTPUT:
    
No evidence of acute disease .