Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are streaky bibasilar opacities . Given difference in technique these may be slightly improved on the right and unchanged on the left . Superiorly , the lungs are clear . Cardiomediastinal silhouette is within normal limits given rotation .
    OUTPUT:
    
Persistent bibasilar opacities , somewhat improved on the right , potentially due to atelectasis .