Findings
-Air is lucent (jet black) on plain film.
-There is streaky air in the subcutaneous tissue bilaterally.


http://eradiology.bidmc.harvard.edu/Classics/item.aspx?section=Emergency+Radiology&labelpk=33f0adab-853f-4010-a0e2-0756b3f1eac5&pk=01b624d2-41ea-4507-8a82-9cea3857bea1