Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . A moderate hiatal hernia is again noted . The lungs appear clear . There is no pleural effusion or pneumothorax . Severe rightward scoliosis centered along the mid thoracic spine appears similar .
    OUTPUT:
    
No evidence of acute disease . Moderate - size hiatal hernia .