Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is an eventration of the right hemidiaphragm , as before . There is no pleural effusion or pneumothorax . The lungs appear clear . There is mild anterior wedging of two lower thoracic vertebral bodies at which point kyphotic curvature is mildly exaggerated . These deformities appear chronic with some increased loss in vertebral body heights and new anterior osteophytes since the remote prior examination .
    OUTPUT:
    
No definite evidence of acute disease .