Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are extremely low with bibasilar and significant right upper lobe atelectasis . The nasogastric tube has been removed and shunt catheter appears unchanged . No pneumothorax . Small left pleural effusion , unchanged from ___ . No pneumonia .
    OUTPUT:
    
1 . Extremely low lung volumes with bibasilar and significant right upper lobe atelectasis . No pneumonia . 2 . Small left pleural effusion , unchanged from ___ .