Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is opacification of the right lung base , likely due to a small pleural effusion with adjacent atelectasis . A small left effusion is likely also present . These findings are better characterized on recent CT chest dated ___ . No pneumothorax . The mediastinum , hila and heart are within normal limits . Severe degenerative changes in bilateral shoulders .
    OUTPUT:
    
There are bibasilar opacities , due to right greater than left pleural effusions with adjacent atelectasis .