Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left subclavian catheter terminates at the junction of the right and left brachiocephalic vein . The endotracheal tube and nasogastric tube are unchanged in appearance . There is persistent left lower lobe atelectasis . Airspace opacity adjacent to the right heart border is also unchanged . No pleural effusion seen . No pneumothorax seen .
    OUTPUT:
    
Unchanged bibasilar atelectasis .