Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an opacity at the right lung base with silhouetting of the right hemidiaphragm likely representing small - to - moderate right pleural effusion with adjacent atelectasis . However , a developing pneumonia in this region can not be excluded . Additionally , there is a small left pleural effusion . Cardiomediastinal silhouette is normal . The upper lung zones are clear . There are no acute fractures identified .
    OUTPUT:
    
Bilateral pleural effusions , small to moderate on the right and small on the left , with adjacent airspace atelectasis . Pnuemonia must be excluded in the proper clinical setting .