Oliveira M A, Araújo J F, Castro G B, Balbo R J
Departamento de Neuro-Psiquiatria, Faculdade de Ciências Médicas, Pontificia Universidade Católica de Campinas (FCM/PUCCAMP), SP, Brasil.
Arq Neuropsiquiatr. 1993 Dec;51(4):560-2. doi: 10.1590/s0004-282x1993000400025.
The authors report two cases of the presence of free air in acute extradural hematomas. This is not an unusual radiological finding which has been infrequently reported in the literature.