Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities which may be secondary to atelectasis given slightly lower lung volumes . There is no effusion . Superiorly the lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified .
    OUTPUT:
    
Bibasilar opacities potentially due to atelectasis noting that infection is not excluded .