Peaking sign (tension pneumocephalus)

The peaking sign is seen in cross-sectional imaging of the brain suggestive of a tension pneumocephalus. It represents the frontal lobes being pushed together forming a peak in the midline giving a heaped up appearance surrounded by air 1. Later, as the frontal lobes are separated they take on the so-called Mount Fuji sign.

Although usually encountered in the setting of tension pneumocephalus it is not pathognomonic of increased pressure. 

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Article information

rID: 62435
Section: Signs
Tag: cases
Synonyms or Alternate Spellings:

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Cases and figures

  • Tension pneumocranium post FESS - perforation of ethmoidal air cells
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