Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable semi-erect AP view of the chest was obtained . There is elevation of the right hemidiaphragm with overlying atelectasis , lucency underlying the right hemidiaphragm could be within bowel ; however , there is concern for free air . There is also evidence of partially - imaged dilated small bowel projecting over the right abdomen . There are areas of atelectasis / scarring in the left mid-to - lower lung . No large pleural effusion is seen . There is no evidence of pneumothorax . The mediastinum is shifted to the left , likely due to the elevated right hemidiaphragm and the cardiac silhouette may be enlarged , although the right aspect of the cardiac silhouette is not well assessed due to the elevated right hemidiaphragm . The aorta is calcified .
    OUTPUT:
    
1 . Elevation of the right hemidiaphragm with overlying atelectasis , lucency underlying the right hemidiaphragm could be within bowel ; however , there is concern for free air . Possible pneumoperitoneum under the right hemidiaphragm . This finding was discussed with Dr . ___ on ___ at 5 :35 p .m . , 15 minutes after discovery / page . 2 . Partially - imaged dilated small bowel in the right abdomen , underlying obstruction may be present .