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Arch Neurol. 2000;57:1366.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

REPORT OF A CASE

A 64-year-old woman underwent a suboccipital craniectomy for the removal of an acute posterior fossa subdural hematoma. On the first postoperative day, she became agitated with a depressed level of consciousness. An immediate brain computed tomographic scan showed a massive accumulation of air in the subdural space of the cranial cavity with compressive effects on both frontal lobes, ie, "Mount Fuji sign," thereby confirming the diagnosis of tension pneumocephalus (Figure 1).

Figure appears in full text version. Figure 1. Computed tomographic scan showing massive accumulation of air in the subdural space with compressive effects on both frontal lobes, ie, "Mount Fuji sign."

The patient fully recovered after a small twist-drill hole was made and the air was needle vented to the outside (Figure 2).

Figure appears in full text version. Figure 2. Follow-up computed tomographic scan showing full recovery.

COMMENT
Tension pneumocephalus can result from the accumulation of air under pressure in the supratentorial subdural space following an intracranial . . . [Full Text of this Article]

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