Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the most recent prior radiograph on ___ there has been interval improvement in multifocal lung opacities . There remains increased opacification at the right lung base improved from the most recent prior , but more pronounced compared to the baseline radiograph from ___ , possibly related to residual scarring in this region . There is no pleural effusion or pneumothorax . The heart is mildly enlarged . The mediastinal contours normal .
    OUTPUT:
    
Improved appearance of the chest compared to prior with residual opacity in the right lower lobe , possibly related to scarring or atelectasis in this region .