Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged , with the heart size within normal limits . The lung volumes are low . The pulmonary vascularity is normal . There minimal streaky opacities in lung bases likely reflective of atelectasis . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .