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De novo vertebral artery dissecting aneurysm after internal trapping of the contralateral vertebral artery. 2017
Naoya Kidani, and
Kenji Sugiu, and
Tomohito Hishikawa, and
Masafumi Hiramatsu, and
Jun Haruma, and
Shingo Nishihiro, and
Yu Takahashi, and
Isao Date
Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5- 1 Shikata-cho, Kita-ku, Okayama-shi, Okayama, 700-8558, Japan.
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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