Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker device is noted with leads terminating in the right atrium , right ventricle , and coronary sinus . The heart size is difficult to assess given the presence of bilateral pleural effusions , but is likely mildly enlarged . Tracheostomy tube remains in unchanged position . Mild pulmonary edema is similar compared to the prior study , but increasing bilateral pleural effusions are noted , moderate to large on the right , and small on the left . Dense opacification in both lung bases likely reflect atelectasis though infection is difficult to exclude . No pneumothorax is identified .
    OUTPUT:
    
Mild pulmonary edema with increasing bilateral pleural effusions , moderate to large on the right and small on the left . Bibasilar airspace opacities likely reflect compressive atelectasis though infection can not be excluded .