Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is a small to moderate hiatal hernia . The mediastinal and hilar contours are otherwise unremarkable . The lungs appear clear . There is no pleural effusion or pneumothorax . Mild loss in height of two mid thoracic vertebral bodies appears unchanged .
    OUTPUT:
    
No evidence of acute disease . Hiatal hernia .