Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear unchanged . The lungs appear clear . There are no pleural effusions or pneumothorax . Mild to moderate rightward convex curvature is again centered along the mid thoracic spine . Bony structures are otherwise unremarkable .
    OUTPUT:
    
No evidence of acute disease .