De novo vertebral artery dissecting aneurysm after internal trapping of the contralateral vertebral artery.

Kidani, Naoya; Sugiu, Kenji; Hishikawa, Tomohito; Hiramatsu, Masafumi; Haruma, Jun; Nishihiro, Shingo; Takahashi, Yu; Date, Isao · Acta Neurochir (Wien) · 2017

case_report · Level V

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Abstract

We present the case of a de novo vertebral artery dissecting aneurysm (VADA) after endovascular trapping of a ruptured VADA on the contralateral side. The first ruptured VADA involved the posterior inferior cerebellar artery, which was successfully treated by endovascular internal trapping using a stent. A follow-up study at 3 months revealed a de novo VADA on the contralateral side. The second VADA was successfully embolized using coils while normal arterial flow in the vertebral artery was preserved using a stent. Increased hemodynamic stress may cause the development of a de novo VADA on the contralateral side.

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