Anterior choroidal artery

The anterior choroidal artery originates from the internal carotid artery. However, it may (rarely) arise from the middle cerebral artery.[1]

Anterior choroidal artery
Diagram of the arterial circulation at the base of the brain (inferior view). The anterior choroidal artery is labeled at right of the circle of Willis.
Details
Sourceinternal carotid artery
Identifiers
LatinArteria choroidea anterior
TA98A12.2.06.019
TA24501
FMA50087
Anatomical terminology

Structure

The anterior choroidal artery originates from the distal carotid artery 5 mm after the origin of the posterior communicating artery and just before the carotid terminus. It serves structures in the prosencephalon, diencephalon, and mesencephalon:[2]

Clinical significance

The full extent of the damage caused by occlusion of the anterior choroidal artery is not known. However, studies show that the interruption of blood flow from this vessel can result in hemiplegia on the contralateral (opposite) side of the body, contralateral hemi-hypoesthesia, and homonymous hemianopsia.[3] These symptoms are thought to arise from ischemic damage to the posterior limb of the internal capsule, thalamus, and optic chiasm/optic tract. However, the posterior limb of the internal capsule also receives lenticulostriate arteries from the middle cerebral artery, thus creating partially redundant supply.[4]

See also
This article uses anatomical terminology.

References
  1. Werner], [senior managing editor Maureen Barlow Pugh ; managing editor Barbara (2000). "Artery, anterior choroidal". Stedman's medical dictionary (27. ed.). Philadelphia, Pa. [u.a.]: Lippincott Williams & Williams. ISBN 0-683-40007-X. {{cite book}}: |first= has generic name (help)
  2. Ropper, Maurice Victor, Allan H. (2001). Adams and Victor's principles of neurology (7th ed.). New York: Medical Pub. Division, McGraw-Hill. ISBN 0-07-067497-3.
  3. "Stroke chances". bismarcktribune.com. Retrieved June 2, 2018.
  4. Helgason, C; Caplan, LR (1986). "Anterior choroidal artery-territory infarction: Report of cases and review". Arch. Neurol. 43 (7): 681–686. doi:10.1001/archneur.1986.00520070039015. PMID 3729746.
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