• Xiao-Peng Wang, Xiang-Yang Bao, Qian-Nan Wang, Zheng-Xing Zou, Ri-Miao Yang, Qian Zhang, and Lian Duan.
• Department of Neurosurgery, 307th Hospital of People's Liberation Army, Anhui Medical University, Hefei, China; Department of Neurosurgery, Chinese PLA General Hospital (Former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China.
• World Neurosurg. 2022 Apr 1; 160: e511-e519.

BackgroundMoyamoya disease (MMD) often presents as ischemic stroke in pediatric patients and hemorrhage in adults. This situation raises questions as to whether the phenotype of moyamoya disease changes with age.ObjectiveWe performed self-precontrol and postcontrol observation monitoring until adulthood on abnormal collateral vessels (ACVs) with the potential risk of bleeding to evaluate the chance of further hemorrhage.MethodsFifteen pediatric patients with >10 years angiography-based follow-up were analyzed. The Matsushima grades were divided into 2 groups (good group, representing Matsushima stage A; and mild group, representing Matsushima stages B and C) to investigate the relationship between Matsushima grades and ACVs derived from vessels likely to cause intracranial hemorrhage.ResultsFour patients (26.7%) had infarction type and 11 (73.3%) patients had transient ischemic attack type. No patient experienced late-onset cerebral hemorrhagic events. One patient experienced recurrent ischemic stroke 6 months after the second surgery and recovered completely after the third surgery. The angiography-based follow-up was conducted at least 10 years after the encephaloduroarteriosynangiosis (EDAS). The good Matsushima group showed a significant positive correlation with the reduction of the anterior choroidal artery (odds ratio, 56.00; P = 0.003), whereas the posterior communicating artery showed no significant decrease before and after the EDAS procedure (odds ratio, 2.00; P = 1.00).ConclusionsThe EDAS procedure can effectively attenuate the dilation and ACVs of the anterior choroidal artery, which may reduce the incidence of further hemorrhage in adulthood.Copyright © 2022. Published by Elsevier Inc.

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