Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Bibasilar opacities may reflect atelectasis . No pneumothorax is detected on these views . Bilateral posterior costophrenic blunting is secondary to small bilateral pleural effusions . Heart size is mildly enlarged , unchanged compared to prior . No pulmonary edema is noted .
    OUTPUT:
    
Low lung volumes with bibasilar airspace opacities , likely atelectasis , with small bilateral pleural effusions , similar compared to prior . No pulmonary edema .