Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities potentially due to atelectasis . Superiorly the lungs are clear , there is no pneumothorax . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Bibasilar opacities potentially atelectasis . Otherwise unremarkable portable chest x-ray .