Anomalous Origin of the Anterior Choroidal Artery

Abstract

<jats:p> We describe a very rare case of anomalous origin of the anterior choroidal artery. In our case the anterior choroidal artery arises from the internal carotid artery proximal to the posterior communicating artery. </jats:p>

Anomalous Origin of the Anterior Choroidal Artery Proximal to an Ipsilateral Fetal Posterior Cerebral Artery: Case Report of an Extremely Rare Anatomic Variant and Discussion of its Clinical Implications

“…We present a case of an anomalous AChA originating proximal to the posterior communicating artery, which has previously been reported in a few individual case reports ( Table 1), and collectively described as a very rare occurrence in large anatomic series [4,[8][9][10][11]. The same anatomic series also described a handful of MCA and PCoA origins of the AChA and in one case a common origin of the PCoA and AChA [3,9].…”

“…Identifying such variance in the vascular anatomy is especially important during pre-operative to mitigate risks of potentially devastating neurological consequences in the event of an injury. This is the sixth reported case of an AChA originating proximal to the PCoA [4,8,[10][11][12]. All but one of the previous reports of a proximal origin had associated aneurysms [4,8,[10][11][12].…”

“…The caudal division of the ICA gives rise to the PCoA and anastomoses with the PCA [17]. Nishio et al have proposed the idea of a mutation causing the anomalous origin of the AChA [11].…”

“…This is the sixth reported case of an AChA originating proximal to the PCoA [4,8,[10][11][12]. All but one of the previous reports of a proximal origin had associated aneurysms [4,8,[10][11][12]. We present a complex vascular pattern with an anomalous origin of the AChA proximal to the PCoA associated with a persistent fetal posterior cerebral artery (PCA).…”

Duplicated Anterior Choroidal Arteries: Literature Review and Clinical Implications

“…They branch from the ICA and commonly originate distal to the PCom. The AChAs pose concerns for neurosurgeons because of their tendency to develop aneurysms and potential to exhibit complex anatomical variations, including course, size, segments, branching patterns and brain regions supplied by these vessels [3][4][5][6][7]. The aim of this paper is to review surgical anatomy, embryology, anatomical variations, pathology of the AChA and its duplication.…”