Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral pacemaker is unchanged in orientation , with leads terminating in the right atrium and right ventricle . The lung volumes are exceedingly low , which results in crowding of the bronchovascular structures . There are , however , new , small bilateral pleural effusions and mild pulmonary edema . The cardiac silhouette remains moderately enlarged . Opacification at the bases is likely atelectasis , although , pneumonia can not be excluded . There is no pneumothorax .
    OUTPUT:
    
New small bilateral pleural effusions and mild pulmonary edema .