Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is a moderate hiatal hernia . The mediastinal and hilar contours appear otherwise unremarkable . The lungs appear clear . There is no pleural effusion or pneumothorax . Severe rightward convex curvature is centered along the mid thoracic spine .
    OUTPUT:
    
No evidence of acute disease . Moderate hiatal hernia .