Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior study there is persistent mild interstitial pulmonary edema . However , there is increased airspace opacification at the right upper lung . Small to moderate bilateral pleural effusions persist . Cardiomediastinal silhouette is stable . No pneumothorax . Vascular stents are again noted in the left axilla .
    OUTPUT:
    
1 . Persistent mild pulmonary edema and small to moderate bilateral pleural effusions . 2 . Increased airspace opacification at the right upper lung as compared to the prior examination may represent asymmetric edema or developing pneumonia .