Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Left - sided dual - chamber pacemaker is noted with leads terminating in right atrium and right ventricle , unchanged . Cardiomegaly is similar . There is continued mild to moderate pulmonary edema , slightly improved compared to the prior exam . Small layering bilateral pleural effusions also may be slightly decreased in the interval . Bibasilar airspace opacities likely reflect atelectasis . There is no pneumothorax . No acute osseous abnormalities are visualized .
    OUTPUT:
    
1 . Mild to moderate congestive heart failure , slightly improved in the interval , with layering small bilateral pleural effusions . 2 . Bibasilar airspace opacities likely reflect compressive atelectasis . Infection can not be excluded .