Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . Elevation of the right hemidiaphragm is chronic . The heart size is mildly enlarged , and likely exaggerated due to low lung volumes and supine technique . The mediastinal and hilar contours are likely within normal limits . There is crowding of the bronchovascular structures . Streaky bibasilar airspace opacities likely reflect atelectasis . No acute osseous abnormality is detected . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
Low lung volumes with chronic elevation the right hemidiaphragm and mild bibasilar atelectasis .