Choroid plexus AVM with anomalous origin of the capsulothalamic artery: A case report

Yamauchi, Shigeru; Kawakami, Taichiro; Murata, Keiji; Ishiguro, Tomoya; Ikeda, Hidetoshi; Nishio, Akimasa

doi:10.1177/1591019917739841

Cited by 8 publications

(9 citation statements)

References 8 publications

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“…18) The CTA supplies the ventral and caudodorsal parts of the posterior limb of the internal capsule, namely the retrolenticular part of the capsule, which contains the optic radiation. 19) In our case, a thin branch divided from the proximal side of the MPB could not be observed after the injection of NBCA. (Fig.…”

Section: Discussionmentioning

confidence: 48%

Intraventricular Hemorrhage due to a Distal Anterior Choroidal Artery Aneurysm Associated with an Arteriovenous Malformation in the Trigone

Magami¹,

Oishi

Mitsuoka³

et al. 2019

JNET

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We herein describe a rare case of intraventricular hemorrhage (IVH) due to a distal anterior choroidal artery (AChA) aneurysm associated with an arteriovenous malformation (AVM) in the trigone of the lateral ventricle during early pregnancy. Case Presentation: At 8 weeks of pregnancy, a 36-year-old woman developed sensory aphasia and mild right hemiparesis due to a left lateral IVH. Digital subtraction angiography showed a peripherally located aneurysm branching from the medial perforating branch (MPB) of the plexal segment in the AChA associated with a micro-AVM in the trigone of the left lateral ventricle. Endovascular embolization was performed. A microcatheter was guided to a feeder branching out from the MPB. The aneurysm and the nidus, including the feeder, were occluded by 20% n-butyl-2cyanoacrylate (NBCA). However, right homonymous hemianopsia was apparent postoperatively, although the blood flow of the cisternal segment was preserved. Head MRI showed an acute infarction in the perfusion area of the AChA, including the internal capsule and optic radiation. Conclusion: We performed endovascular embolization to temporarily treat both the aneurysm and the nidus because the source of bleeding was unclear considering the hematoma position and angiographic features. Ischemic complications of the embolization for the aneurysm and the nidus with the preservation of the cisternal segment of the AChA are unusual. Keywords▶ intraventricular hemorrhage, distal anterior choroidal artery aneurysm, arteriovenous malformation This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives International License.

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Section: Discussionmentioning

confidence: 48%

Intraventricular Hemorrhage due to a Distal Anterior Choroidal Artery Aneurysm Associated with an Arteriovenous Malformation in the Trigone

Magami¹,

Oishi

Mitsuoka³

et al. 2019

JNET

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“…The authors of Choroid plexus AVM with anomalous origin of the capsulothalamic artery: a case report believe the time frame of arteriovenous malformation (AVM) formation is in early gestation, 1 a belief which is shared by the author of this letter. In other words, a primordial, abnormal vascular structure caused by developmental failure of the embryos in the 40–80 mm length interval (approximately 10–14 weeks of gestation) persists during the entire gestational and the postnatal periods, and then becomes symptomatic.…”

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confidence: 75%

The time frame of the brain AVM formation

Komiyama

2019

Interv Neuroradiol

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The VIA ® Catheter is intended for the introduction of non-liquid interventional devices (such as stents/flow diverters) and infusion of diagnostic (such as contrast media) or non-liquid therapeutic agents into the neuro, peripheral, and coronary vasculature. The VIA Catheter is contraindicated for use with liquid embolic materials, such as n-butyl 2-cyanoacrylate or ethylene vinyl alcohol & DMSO (dimethyl sulfoxide). The VIA Catheter is contraindicated for use in the pediatric population (<22 yrs of age). Caution: Federal law restricts these devices to sale by or on the order of a physician.

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“…Actually, AVM in our patient might be formed during the early gestational period because of co-existing primitive trigeminal artery and the aberrant capsulothalamic artery. 1 Nevertheless, we should acknowledge that this established theory is, in fact, a mere hypothesis and is not supported by robust evidence. Indeed, some investigators have raised objections to this theory.…”

Section: Responsementioning

confidence: 91%