Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , decreased when compared to the prior study . Bibasilar atelectasis is new compared to the prior study . Streaky retrocardiac opacities at the left lung base likely reflect atelectasis . No pneumothorax seen . No pleural effusion seen .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .