Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On a background of emphysema , there has been interval improvement of the previously noted moderate pulmonary edema with minimal evidence of bronchial cuffing and prominence of the pulmonary vasculature . Small bilateral pleural effusions are unchanged compared to the prior exam . Scarring and volume loss in the right middle lobe appear stable . Again seen is a large irregular density projecting over the right lower lung , which corresponds to a large unusual branching calcification as characterized by a prior CT . There is mild bibasilar atelectasis . There is no evidence of pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Interval improvement of moderate pulmonary edema , with residual mild pulmonary edema . 2 . Overall , minimal interval change in the small bilateral pleural effusions .