Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Bibasilar opacities may reflect atelectasis and / or pneumonia . Tiny left pleural effusion is again noted . Cardiomediastinal silhouette is stable . No pneumothorax . Bony structures are intact .
    OUTPUT:
    
Bibasilar atelectasis increased on the right compared with prior , likely atelectasis and / or pneumonia .