Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar parenchymal opacities , right greater than left . Blunting of the posterior costophrenic angles could be due to small effusions . Superiorly the lungs are clear . Moderate cardiomegaly is noted as well as tortuosity of the descending thoracic aorta with atherosclerotic calcifications at the arch . No acute osseous abnormalities .
    OUTPUT:
    
Bibasilar parenchymal opacities atelectasis versus be due to infection in the proper clinical setting .