Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously identified well - circumscribed opacity at the right lung base medially is partially obscured by the heart but still visualized . Lower lung volumes are identified on the current exam . Increased opacity projects over the left hemi thorax potentially due to parenchymal opacities , potentially in part atelectasis given lower lung volumes . Right upper lung opacity is also new since prior . There are old healed right lateral rib fractures . Increased opacity projecting along the right lateral chest and right lung base could due to pleural thickening and / or effusion . Cardiac silhouette is difficult to assess . And accentuated by low lung volumes .
    OUTPUT:
    
Parenchymal opacities throughout the left lung and right upper lung which could be infection in the proper clinical setting . Increased pleural based opacity on the right , potentially pleural - based thickening and / or possible effusion . Consider PA and lateral to further assess these findings . Followup will certainly be necessary .