Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities are seen which may be due to pleural effusions and overlying atelectasis . Persistent left base opacity . There is prominence of the interstitial markings bilaterally suggesting mild to moderate interstitial edema . The cardiac silhouette remains mildly enlarged . Mediastinal contours are stable .
    OUTPUT:
    
Interstitial edema and bilateral small pleural effusions .