Inferolateral trunk
Last revised by Elvin Talishli on 19 Jan 2021
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Talishli E, Hacking C, et al. Inferolateral trunk. Reference article, Radiopaedia.org (Accessed on 07 Sep 2024) https://doi.org/10.53347/rID-4732
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rID:
4732
Article created:
Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosures
Last revised:
19 Jan 2021,
Elvin Talishli
Disclosures:
At the time the article was last revised Elvin Talishli had no recorded disclosures.
View Elvin Talishli's current disclosures
Revisions:
11 times, by
8 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Inferolateral trunk
- artery to the inferior cavernous sinus
The inferolateral trunk, along with the meningohypophyseal trunk, is a branch of the C4 segment of the internal carotid artery. It is identified in up to 80% of dissection specimens but is less frequently seen on imaging.
It is also referred to as the artery to the inferior cavernous sinus, arising laterally from the cavernous segment and is directed inferiorly (thus inferolateral trunk).
The inferolateral trunk has three or four branches, as it passes between the trochlear nerve (CN IV) (below) and ophthalmic division of the trigeminal nerve (CN V) (above):
- first branch runs posteriorly along the abducens nerve (CN VI) and supplies part of the tentorium. The marginal tentorial artery (usually from the meningohypophyseal trunk) may arise from here
- second branch to the superior orbital fissure (directed anteriorly) anastomoses with the deep recurrent meningeal branch of the ophthalmic artery (this is an important consideration during embolization)
- third branch is given off as the artery passes of the ophthalmic division and supplies the maxillary division of the trigeminal nerve as it exits through foramen rotundum. (this is the most frequently seen branch on angiography)
- fourth branch anastomoses with the accessory meningeal artery which passes through foramen ovale
- fifth branch may be present; the recurrent artery to the foramen lacerum. It anastomoses with a carotid branch from the ascending pharyngeal artery
References
- 1. Practical Neuroangiography. LWW. ISBN:1451144156. Read it at Google Books - Find it at Amazon
Incoming Links
Articles:
- Meningohypophyseal trunk
- Internal carotid artery
- Persistent dorsal ophthalmic artery
- Branches of internal carotid artery (mnemonic)
- Anastamoses between internal and external carotid arteries
- Dural arteriovenous fistula
- Inferior hypophyseal arterial circle
- Cavernous sinus
- McConnell’s capsular arteries
- Pituitary gland
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cerebral hemisphere (telencephalon)
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