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Perdenser<sup>®</sup> coils for anterior choroidal artery aneurysms

Perdenser® coils for anterior choroidal artery aneurysms

Anterior cerebral choroidal artery aneurysms account for 2%-5% of all intracranial aneurysms [1]. As an important blood supply site, the anterior choroidal arteries are the last important branch before the internal carotid arteries are bifurcated, wherein 98% of the anterior choroidal arteries are 2.4 mm distal to the posterior communicating arteries[2], 70% of the anterior choroidal arteries have no branches, and mostly arise from the posterior-lateral internal carotid arteries[3], and a minority of anterior choroidal arteries originate from the posterior communicating arteries or the middle cerebral arteries[4]. From the posterior-medial carotid cistern, they move backwards into the choroid fissure along the ventral optic tract and emit small branches to supply the optic tract, the medial segment of the globus pallidus, uncinate gyrus, hippocampus, etc. Meanwhile, branch supply is emitted at the level of the lateral geniculate nucleus, including the optic radiation and auditory radiation, and the tail of the caudate nucleus [5-6]. Afterwards, they wavily move upwards in the cerebral ventricle along medial choroid plexus to trigone of lateral ventricles, then dock and coincide with the posterolateral choroidal arteries from the posterior cerebral arteries. Therefore, the size of choroid and blood supply area vary greatly. In the early craniotomy treatment, the choroidal injury caused by the clipping of the anterior choroidal artery aneurysms may cause hemiplegia of contralateral limb, the contralateral homonymous hemianopsia and dysarthria, which is the anterior choroidal artery syndrome [7].

With the continuous improvement of the medical care, endovascular interventional treatment can better confirm the relationship between choroid and aneurysms, monitor unobstruction of the choroid at any time during the operation, and take measures as soon as possible after obstruction, thereby having obvious advantages in avoiding the occurrence of anterior choroidal syndrome.

Since stents assisted coils embolization is first used for treating intracranial aneurysms in China in 2000 [8], it has made great progress in the success rate and efficacy of surgery. The key to embolize aneurysms and prevent recurrence and rupture of aneurysms is to densely embolize aneurysms [9]. Embolization of the aneurysms with stent-assisted coils can prevent the coils from penetrating into the parent arteries, prevent the coils from being compressed again resulting in the recurrence of the aneurysms, and promote the formation of endarterium at aneurysmal neck while changing hemodynamics, thereby reducing risk of recurrence[10].

The case for share is combination of Perdenser® coils from TJWY MEDICAL along with stenting in the treatment of anterior cerebral choroidal artery aneurysms.

Basic patient information: female, 65 years old. Headache before admission.