• Taichiro Imahori, Takashi Mizobe, Toshiyuki Fujinaka, Shinichi Miura, Masahiro Sugihara, Hideo Aihara, and Eiji Kohmura.
• Department of Neurosurgery, Hyogo Brain and Heart Center, Hyogo, Japan. Electronic address: taichiro.imahori@gmail.com.
• World Neurosurg. 2020 Nov 1; 143: 353-359.

BackgroundAneurysms at the origin of a duplicated middle cerebral artery (DMCA) are quite rare. Here, we report a patient with such an aneurysm successfully treated endovascularly using our novel "wrapped-candy" low-profile visualized intraluminal support (LVIS) technique.Case DescriptionA 44-year-old woman underwent endovascular treatment for an unruptured wide-necked aneurysm at the origin of a DMCA that incorporated the origin of the DMCA into its neck. Stent-assisted coiling was performed using our newly developed "wrapped-candy" LVIS technique. To protect the origin of the DMCA and increase the stent metal density at the neck, an LVIS blue 3.5-mm × 22-mm stent was deployed by pushing the delivery wire aggressively to transform the visible wire components of the LVIS into a shape like "wrapped candy," maximizing the strut compaction at the neck of the aneurysm. Subsequently, the aneurysm component was coiled using a jailed microcatheter. The final procedural angiography demonstrated almost complete aneurysm occlusion with DMCA preservation.ConclusionsStent-assisted coiling can be a feasible treatment for an unruptured, usually wide-necked, aneurysm at the origin of a DMCA. The wrapped-candy LVIS technique may be useful in more challenging morphologies such as wide-necked aneurysms that incorporate the branch origin into the aneurysm neck.Copyright © 2020 Elsevier Inc. All rights reserved.

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