Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes with bibasilar opacities . Bibasilar opacities could be due to atelectasis or infection . No large pleural effusion is seen . There is no pneumothorax . The cardiac silhouette is top - normal . The aorta is somewhat tortuous .
    OUTPUT:
    
Low lung volumes with bibasilar opacities ; bibasilar opacities could be due to a low atelectasis and / or pneumonia .