Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains at least moderately enlarged , though assessment is somewhat limited due to the presence of a moderate - to - large right pleural effusion . A small left pleural effusion is also noted . Bibasilar airspace opacities could reflect atelectasis , though infection is difficult to exclude . There appears to be mild pulmonary vascular congestion . No pneumothorax is demonstrated . Fusion hardware within the lumbar spine is partially imaged .
    OUTPUT:
    
Mild pulmonary edema and bilateral pleural effusions , moderate to large on the right and small on the left . Bibasilar airspace opacities could reflect atelectasis , but infection can not be excluded .