“…Pneumocephalus can be seen in the intracranial cavity: in the epidural, subdural, subarachnoid, intraventricular or intraparenchymal area. The causes of pneumocephalus include traumas, tumors, infections, cerebrospinal fluid fistulas, nitrous oxide (N2O) anesthesia and cranial surger ies [ 4 ]. Pneumocephalus usually manifests itself with nonspesific symptoms such as headache, nausea, vomiting, dizziness, lethargy, meningeal irritations.…”