Epidurual pneumatosis: a benign complication of benign pneumomediastinum.

Subcutaneous emphysema and pneumomediastinum are well-known complications of barotrauma. There are no fascial barriers between the posterior mediastinum and the retropharyngeal and epidural spaces; thus, air can diffuse freely to the epidural space and produce an epidural pneumatosis. We report a case of epidural pneumatosis caused by a pneumomediastinum following nasotracheal intubation for an attempted suicide. This benign complication of air leakage was easily recognized on computed tomography (CT) scan.