Carotid-anterior cerebral artery (ACA) anastomosis associated with azygos ACA and ophthalmic artery arising from the middle meningeal artery: a case report
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Among variations of the anterior cerebral artery (ACA), anastomosis of its A1–A2 junction with the ophthalmic segment of the internal carotid artery is rare and described as carotid-ACA anastomosis or infraoptic course of the ACA. One common variant, an azygos ACA, demonstrates no pairing of the A2 segment. To our knowledge, association of a carotid-ACA anastomosis with an azygos ACA is not reported in the English-language literature. We report a case diagnosed by magnetic resonance angiography in which right carotid-ACA anastomosis was associated with an azygos ACA and the right ophthalmic artery originated from the middle meningeal artery.
KeywordsAnterior cerebral artery Cerebral arterial variation Internal carotid artery Magnetic resonance angiography Middle meningeal artery Ophthalmic artery
We thank Rosalyn Uhrig, M. A. for her editorial assistance in the preparation of this manuscript.
KM and AU carried out the study design and drafted the manuscript; KM, AU, NS, JI, and TS acquired data and critically reviewed the manuscript; and all authors read and approved the final manuscript.
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Conflict of interest
We declare that we have no conflict of interest with any organization or institution.
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