Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a small eventration of the right hemidiaphragm . There is no pleural effusion or pneumothorax . No free air is demonstrated . The lungs appear clear . The bony structures are unremarkable aside from slight rightward convex curvature centered along the mid thoracic spine .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease or free air .