Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacities involving the right mid lung zone may represent scarring and post-surgical changes related to right lower lobe wedge resection but appear slightly more confluent compared to the prior examination of ___ raising the possiblity of a superimposed pneumonia . Aortic arch calcification is noted . There is no evidence of pleural effusion . There is no pneumothorax . The cardiac silhouette is normal . The patient is status post left mastectomy . Opacification in the left lung base likely represents nipple shadow .
    OUTPUT:
    
Opacities involving the right mid lung zone appear slightly more confluent compared to the prior examination of ___ ; underlying infectious process ca n't be excluded in the correct clinical setting .