Mount Fuji sign

Last revised by Ashesh Ishwarlal Ranchod on 13 Sep 2023

Citation, DOI, disclosures and article data

Citation:

Choudhary G, Ranchod A, Baba Y, et al. Mount Fuji sign. Reference article, Radiopaedia.org (Accessed on 24 Apr 2024) https://doi.org/10.53347/rID-12518

DOI:

https://doi.org/10.53347/rID-12518

Permalink:

https://radiopaedia.org/articles/12518

rID:

12518

Article created:

9 Dec 2010, Gagandeep Choudhary

Disclosures:

At the time the article was created Gagandeep Choudhary had no recorded disclosures.

View Gagandeep Choudhary's current disclosures

Last revised:

13 Sep 2023, Ashesh Ishwarlal Ranchod ◉

Disclosures:

At the time the article was last revised Ashesh Ishwarlal Ranchod had no financial relationships to ineligible companies to disclose.

View Ashesh Ishwarlal Ranchod's current disclosures

Revisions:

21 times, by 14 contributors - see full revision history and disclosures

Systems:

Central Nervous System

Sections:

Signs

Tags:

tension pneumocephalus

Synonyms:

Mt Fuji sign
Mt. Fuji sign

Mount Fuji sign is seen on cross-sectional imaging and is indicative of a tension pneumocephalus.

The sign refers to the presence of gas (pneumocephalus) between the tips of the frontal lobes with a heaped-up appearance giving the silhouette-like appearance of Mount Fuji ^1-3. It suggests that the pressure of the gas is at least greater than that of the surface tension of cerebrospinal fluid between the frontal lobes ^1-3. The sign is caused by cortical veins tethering the frontal lobes, resulting in their striking appearance ⁵.

The appearance of this sign often warrants immediate surgery to prevent permanent neurological damage. However, conservative management in patients with no signs of raised intracranial pressure has also been described ⁴.

References

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