Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Improved aeration of the left lower lobe since ___ with residual bibasilar opacities likely atelectasis . No pleural effusion or pneumothorax . Normal cardiomediastinal silhouette .
    OUTPUT:
    
Improving left lower lobe aeration with residual bibasilar atelectasis . Dr . ___ paged at 11 :00 on ___ by Dr . ___ ___ request