Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single upright portable radiograph of the chest was acquired . An NG tube courses below the level of the diaphragm , with its tip positioned in the mid stomach . Lung volumes are low . There is minimal bilateral lower lobe atelectasis . There is no focal consolidation . The heart size is normal . The mediastinal contours are normal . There is no definite pleural effusion . No pneumothorax is seen . Subtle lucency under the right hemidiaphragm is concerning for pneumoperitoneum . Air is seen within non-dilated loops of colon . Previously seen air - filled dilated loops of small bowel on the prior radiograph from earlier today are not identified on the present study .
    OUTPUT:
    
1 . Lucency under the right hemidiaphragm is concerning for pneumoperitoneum . Recommend further evaluation with a left lateral decubitus radiograph . 2 . Interval resolution of air - filled dilated loops of small bowel seen on radiographs from earlier today . 3 . Minimal bilateral lower lobe atelectasis .