Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior right is no longer seen . There is right basilar opacity , new since prior . Linear left - sided opacities are likely atelectasis . There is no large effusion . Cardiac silhouette is enlarged but similar compared to prior . Atherosclerotic calcifications seen at the aortic arch . No acute osseous abnormalities .
    OUTPUT:
    
New right basilar opacity , potentially atelectasis noting that infection is entirely possible in the proper clinical setting .