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collection of gas beneath the galea aponeurotica, usually due to fracture into the paranasal sinuses.
Synonym(s): extracranial pneumocele
Farlex Partner Medical Dictionary © Farlex 2012
A collection of gas under the scalp, caused by a fracture of the skull that communicates with a paranasal sinus.
See also: pneumatocele
Medical Dictionary, © 2009 Farlex and Partners