brain disorder Pneumocephalus MedDRA:10048736 Presence of air or gas within the intracranial cavity (e.g., epidural space, subdural space, intracerebral, etc.) which may result from traumatic injuries, fistulous tract formation, erosions of the skull from NEOPLASMS or infection, NEUROSURGICAL PROCEDURES, and other conditions. Dani Welter MESH:D011007 SNOMEDCT:14415006