Mount Fuji sign following surgical drainage of spinal epidural abscess: Figure 1.

Delayed tension pneumocephalus and pneumorrhacis after routine cervical spine surgery treated successfully without burr holes

“…Our patient recovered and was extubated more quickly than has been reported in a case of conservative management, 5 which is similar to burr hole therapy alone. 3 Our patient also recovered quicker compared with cases treated with burr holes and dural repair. 2 It should be highlighted that it is difficult to draw definitive conclusions due to the heterogeneity of patient groups as well as small sample size, but – at least in our patient – dural repair with supportive care had similar, if not better, outcomes than reported cases that have been treated with burr holes.…”

Delayed Posttraumatic Tension Pneumocephalus: A Rare Case Report and Review of the Literature

“…Intracranial air may accumulate at any site, that is, at epidural, subdural, subarachnoid, ventricular, or intracerebral sites. Interestingly, if it collects at the subdural site and extends downward to the interhemispheric fissure, it shows a unique appearance on CAT scan referred to radiologically as "Mount Fuji sign" [6,11,12] (Figure 3).…”

Spontaneous Resolution of Tension Pneumocephalus Following Blunt Head Trauma

“…Tension pneumocephalus develops when intracranial air accumulates under pressure due to a one-way valve effect similar to tension pneumothorax [2]. Common mechanisms include head or facial trauma, basilar skull tumors, a neurosurgical or otorhinolaryngological procedure, and rarely barotrauma from scuba diving or even positive pressure ventilation [2-3]. The clinical presentation of tension pneumocephalus varies from a simple headache to seizures, lethargy, and altered mental status [3-4].…”

“…Common mechanisms include head or facial trauma, basilar skull tumors, a neurosurgical or otorhinolaryngological procedure, and rarely barotrauma from scuba diving or even positive pressure ventilation [2-3]. The clinical presentation of tension pneumocephalus varies from a simple headache to seizures, lethargy, and altered mental status [3-4]. Tension pneumocephalus may lead to subsequent compression of the frontal hemispheres, along with a widening of the interhemispheric space, giving a peaked appearance due to intact bridging veins [2].…”

“…Tension pneumocephalus may lead to subsequent compression of the frontal hemispheres, along with a widening of the interhemispheric space, giving a peaked appearance due to intact bridging veins [2]. This phenomenon, seen on computed tomography (CT) results, in the characteristic “Mount Fuji sign” and is considered a neurosurgical emergency [3]. Early recognition by radiologists and emergency physicians, with prompt neurosurgical consult and consideration of antibiotics to prevent meningitis, is imperative.…”