Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal contours are normal . A right - sided internal jugular venous catheter tip sits within mid SVC . The lung volumes are low , accentuating the bronchovascular structures and causing mild bibasilar atelectasis . No large pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis .