Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As on prior , for a low lung volumes are seen with streaky bibasilar opacities . Superiorly , the lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Bibasilar opacities which in light of low lung volumes are likely atelectasis noting that superimposed pneumonia can not be excluded . If desired , repeat film with improved aeration may prove useful .