Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube and enteric tube are in stable positions . Low lung volumes with minimal bibasilar atelectasis . No evidence of free intraperitoneal air . Cholecystectomy clips are seen in the right upper quadrant of the abdomen . Otherwise no change from study performed 30 minutes prior .
    OUTPUT:
    
No evidence of free intraperitoneal air on this upright view .