Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities , right greater than left , likely atelectasis . Superiorly , the lungs are clear . Moderate cardiomegaly is again noted as well as tortuosity of the enlarged descending thoracic aorta as on prior . Left chest wall dual lead pacing device is again noted . No acute osseous abnormalities .
    OUTPUT:
    
Bibasilar opacities likely atelectasis , infection can not be entirely excluded .