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I write to suggest a correction to this article. The axial CT slice given in the question, though correctly described as extensive pneumocephalus in the answer, is sadly lacking the finding that this pattern of pneumocephalus is the Mount Fuji sign which suggests tension pneumocephalus. This is a neurosurgical emergency which usually requires surgical decompression. Of course in this particular patient, this may not be appropriate. Nonetheless, the learning point of this Spot Diagnosis article should be to highlight tension pneumocephalus as an emergency diagnosis not to be missed, rather than simply air seen in the intracranial cavity.
No competing interests
15 July 2017
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