Case 41 History: MVA
This one is a little tough. I’ll give you the subQ air and it’s not a rib fx. Name the sign and the dx.
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This was a bit of a eye test. The subcutaneous air was actually a hint. Check out the diaphragms, are they continuous?
Answer: Continuous diaphragm sign - ie Pneumomediastinum
short write ups:
nice archival paper on pneumomediastinum signs: http://www.ajronline.org/doi/pdf/10.2214/ajr.166.5.8615238