Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities are unchanged since prior study . The cardiomediastinal silhouette is un changed . There is perhaps slight interval improvement in bilateral small pleural effusions . There is mild interstitial edema . No pneumothorax is identified . A tracheostomy tube is in unchanged position . A right upper extremity PICC terminates at the superior cavoatrial junction . An enteric tube is partially visualized with the tip coursing above the field of view of this exam below the diaphragm .
    OUTPUT:
    
1 . Persistent bibasilar opacities which may represent atelectasis versus pneumonia in the appropriate clinical setting . 2 . Slight interval improvement in bilateral pleural effusions . Mild interstitial edema .