Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a background of severe emphysema . There is atelectasis at the lung bases and right middle lobe better seen on recent CT of the chest . There may be an evolving opacity in the right mid lung not definitely seen on recent CT . There is new mild pulmonary edema and small bilateral pleural effusions . A stent is visualized and aortic arch . The heart is top normal . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Possible opacity in the right mid lung not definitely seen on recent CT could reflect evolving pneumonia . 2 . Severe emphysema with bibasilar and right middle lobe atelectasis . 3 . New mild pulmonary edema and small bilateral pleural effusions .