Asymmetrically large jugular bulb
Last revised by Tariq Walizai
on 9 Sep 2024
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Walizai T, Knipe H, Asymmetrically large jugular bulb. Reference article, Radiopaedia.org (Accessed on 09 Dec 2024) https://doi.org/10.53347/rID-940
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940
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At the time the article was created Frank Gaillard had no recorded disclosures.
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Last revised:
9 Sep 2024,
Tariq Walizai
Disclosures:
At the time the article was last revised Tariq Walizai had no financial relationships to ineligible companies to disclose.
View Tariq Walizai's current disclosures
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Asymmetrically large jugular bulbs are entirely normal and asymptomatic; its only significance is to distinguish it from pathology.
The size of the jugular bulbs is variable, with the right side being significantly larger than the left in two-thirds of people.
A normal but large bulb will have an intact jugular spine, normal bony margins and have proportionately large ipsilateral internal jugular vein and sigmoid sinus. Its dome will not extend above the floor of the internal acoustic meatus (IAM) thus distinguishing it from a high riding jugular bulb.
Due to turbulent flow in the jugular bulb, signal on MRI can be confusing, and it must not be mistaken for a tumour.
References
- 1. Swartz JD, Harnsberger HR. Imaging of the temporal bone. George Thieme Verlag. (1998) ISBN:0865777004. Read it at Google Books - Find it at Amazon
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