Pneumomediastinum

Pneumomediastinum
A CT scan showing air in the mediastinum
ICD-10	J98.2, P25.2
ICD-9	518.1, 770.2
DiseasesDB	29460
MedlinePlus	000084
eMedicine	ped/1832  emerg/469
MeSH	D008478

Pneumomediastinum
Pneumomediastinum: Spinnaker sail sign. (Image courtesy of RadsWiki)

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Pneumomediastinum (or mediastinal emphysema, from Greek pneuma - "air") is a condition in which air is present in the mediastinum. First described in 1819. Pneumomediastinum is uncommon, it occurs when air leaks from any part of the lung or airways into the mediastinum and is often recognized by a "crunching" sound (Hamman's crunch).

Chest X Ray

Images shown below are courtesy of RadsWiki and copylefted

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  Pneumomediastinum: Spinnaker sail sign

CT

Images shown below are courtesy of RadsWiki and copylefted

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  Pneumomediastinum
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  Pneumomediastinum
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  Pneumomediastinum and pneumothorax
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  Pneumomediastinum and pneumothorax

Acknowledgements

The content on this page was first contributed by: C. Michael Gibson M.S., M.D.

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