Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is significantly rotated . The heart is not enlarged . The lungs are clear . There is no pneumothorax or pleural effusion . There is free air under the right hemidiaphragm , likely postsurgical . Severe thoracolumbar scoliosis is noted .
    OUTPUT:
    
Free air under the right hemidiaphragm is likely postsurgical .