Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , lung volumes remain slightly low . There is consolidation at the lung bases , right greater than left , representing atelectasis , aspiration or pneumonia . No pleural effusion . No pneumothorax . Heart size is normal and unchanged .
    OUTPUT:
    
Bibasilar opacities , right greater than left , which may represent atelectasis , aspiration or pneumonia .