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 slightly partly calcified scarring at each lung apex . The lungs appear otherwise clear . There are no pleural effusions or pneumothorax . There is slight rightward convex curvature along the thoracic spine .
    OUTPUT:
    
No evidence of acute disease .