Citation, DOI, disclosures and article data
Citation:
Gaillard F, Persistent limbic arch. Reference article, Radiopaedia.org (Accessed on 24 Mar 2025) https://doi.org/10.53347/rID-157059
Disclosures:
At the time the article was created Frank Gaillard had the following disclosures:
- Radiopaedia Australia Pty Ltd and Radiopaedia Events Pty Ltd, Director, Founder and CEO (Radiopaedia) (ongoing)
- Biogen Australia Pty Ltd, Investigator-Initiated Research Grant for CAD software in multiple sclerosis: finished Oct 2021 (past)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Frank Gaillard's current disclosures
Disclosures:
At the time the article was last revised Frank Gaillard had the following disclosures:
- Radiopaedia Australia Pty Ltd and Radiopaedia Events Pty Ltd, Director, Founder and CEO (Radiopaedia) (ongoing)
- Biogen Australia Pty Ltd, Investigator-Initiated Research Grant for CAD software in multiple sclerosis: finished Oct 2021 (past)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Frank Gaillard's current disclosures
A persistent limbic arch (or ring) is a cerebral vascular anatomical variant whereby a complete vascular ring encircles the limbic system and corpus callosum.
In the embryo, this connection is between the anterior choroidal artery and the anterior cerebral artery (via pericallosal artery) 2. This usually regresses and in the adult, the anterior and posterior supply are separated by an intervening pial capillary network on the superior surface of the posterior corpus callosum 1,2.
Occasionally persistent direct a large-calibre anastomosis is identified in adults, divided into two types 2:
These anastomoses are also important in various disease states including vein of Galen malformations 1 and moyamoya disease 2.
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1. Spazzapan P, Milosevic Z, Velnar T. Vein of Galen Aneurismal Malformations - Clinical Characteristics, Treatment and Presentation: Three Cases Report. World J Clin Cases. 2019;7(7):855-62. doi:10.12998/wjcc.v7.i7.855 - Pubmed
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2. Bonasia S, Ciccio G, Smajda S et al. Angiographic Analysis of Natural Anastomoses Between the Posterior and Anterior Cerebral Arteries in Moyamoya Disease and Syndrome. AJNR Am J Neuroradiol. 2019;40(12):2066-72. doi:10.3174/ajnr.A6291 - Pubmed
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