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Moyamoya disease

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https://www.readbyqxmd.com/read/29650781/anatomic-and-angiographic-analyses-of-ophthalmic-artery-collaterals-in-moyamoya-disease
#1
T Robert, G Cicciò, P Sylvestre, A Chiappini, A G Weil, S Smajda, C Chaalala, R Blanc, M Reinert, M Piotin, M W Bojanowski
BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic artery and the anterior cerebral artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included...
April 12, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29649969/magnetic-resonance-imaging-for-assessment-of-cerebrovascular-reactivity-and-its-relationship-to-cognition-a-systematic-review
#2
Sarah J Catchlove, Andrew Pipingas, Matthew E Hughes, Helen Macpherson
BACKGROUND: Cerebrovascular reactivity (CVR) refers to the responsiveness of cerebral vasculature to vasoactive stimuli. CVR is an indicator of brain health and can be assessed using vasodilatory techniques and magnetic resonance imaging (MRI). Using such approaches, some researchers have explored the relationship between CVR and cognition; here we systematically review this work. RESULTS: We extracted information pertaining to: (1) study location and design, participant characteristics, sample sizes, (2) design of vascular challenge, end-tidal CO 2 (etCO 2 ) concentrations (if applicable), (3) MRI protocol, (4) cognitive assessment, (5) CVR values, and outcomes of statistical analyses with cognitive tests...
April 12, 2018: BMC Neuroscience
https://www.readbyqxmd.com/read/29643681/mismatch-in-brain-perfusion-and-metabolism-detected-with-99m-tc-hexamethyl-propylene-amine-oxime-single-photon-emission-computed-tomography-and-18-f-fluorodeoxyglucose-positron-emission-tomography-in-moyamoya-disease
#3
Justo Serrano Vicente, Luis Fernández Prudencio, José Rafael Infante Torre, Juan Ignacio Rayo Madrid
We report a 47-year-old woman who developed an ischemic stroke with diplopia and dysarthria. Emergency computed tomography (CT) showed no pathological findings, and magnetic resonance (MR) showed mild ischemic-degenerative lesions. MR angiography and angiogram showed severe stenosis of both internal carotid and main intracranial arteries with plenty collateral vessels with "puff of smoke" suggesting a moyamoya disease (MMD). Brain perfusion single-photon emission CT showed global diminished perfusion in the brain lobes and a marked relative hyperperfusion in the cerebellum...
April 2018: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29624146/posterior-cerebral-artery-stenosis-and-posterior-circulation-revascularization-surgery-in-pediatric-patients-with-moyamoya-disease
#4
Tomomi Kimiwada, Toshiaki Hayashi, Reizo Shirane, Teiji Tominaga
OBJECTIVE Some pediatric patients with moyamoya disease (MMD) present with posterior cerebral artery (PCA) stenosis before and after anterior circulation revascularization surgery and require posterior circulation revascularization surgery. This study evaluated the factors associated with PCA stenosis and assessed the efficacy of posterior circulation revascularization surgery, including occipital artery (OA)-PCA bypass, in pediatric patients with MMD. METHODS The presence of PCA stenosis before and after anterior circulation revascularization surgery and its clinical characteristics were investigated in 62 pediatric patients (< 16 years of age) with MMD...
April 6, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29610036/paradoxical-association-of-symptomatic-local-vasogenic-edema-with-global-cerebral-hypoperfusion-after-direct-revascularization-surgery-for-adult-moyamoya-disease
#5
Ryosuke Tashiro, Miki Fujimura, Shunji Mugikura, Kuniyasu Niizuma, Hidenori Endo, Toshiki Endo, Teiji Tominaga
BACKGROUND: Superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis is the standard treatment for Moyamoya disease (MMD). Cerebral hyperperfusion syndrome is a potential complication of this procedure and can cause local vasogenic edema and/or delayed intracerebral hemorrhage. Cerebral hypoperfusion is a contradictory postoperative pathophysiological condition implicated in MMD, but its association with symptomatic local vasogenic edema has not been reported. CASE REPORT: A 31-year-old woman with MMD underwent left STA-MCA anastomosis 3 months after a minor completed stroke in bilateral hemispheres...
March 30, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29600916/risk-factors-for-and-outcomes-of-postoperative-complications-in-adult-patients-with-moyamoya-disease
#6
Meng Zhao, Xiaofeng Deng, Dong Zhang, Shuo Wang, Yan Zhang, Rong Wang, Jizong Zhao
OBJECTIVE The risk factors and clinical significance of postoperative complications in moyamoya disease are still unclear. The aim of this study was to investigate the predictors of postoperative complications in moyamoya disease and examine the impact of complications on outcomes. METHODS The authors reviewed consecutive cases involving adult moyamoya disease patients who underwent indirect, direct, or combined bypass surgery in their hospital between 2009 and 2015. Preoperative clinical characteristics and radiographic features were recorded...
March 30, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29570010/longitudinal-anterior-to-posterior-shift-of-collateral-channels-in-patients-with-moyamoya-disease-an-implication-for-its-hemorrhagic-onset
#7
Shusuke Yamamoto, Satoshi Hori, Daina Kashiwazaki, Naoki Akioka, Naoya Kuwayama, Satoshi Kuroda
OBJECTIVE This study aimed to assess longitudinal changes in the collateral channels originating from the lenticulostriate artery (LSA), posterior communicating artery (PCoA), and anterior and posterior choroidal arteries (AChA and PChA, respectively) during disease progression and/or aging. The impact of collateral channels on onset type was also examined. METHODS This study included 71 involved hemispheres in 41 patients with moyamoya disease. The disease was categorized into 6 stages according to Suzuki's angiographic staging system...
March 23, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29567119/clinical-features-surgical-treatment-and-long-term-outcome-in-children-with-hemorrhagic-moyamoya-disease
#8
Peicong Ge, Qian Zhang, Xun Ye, Shuo Wang, Dong Zhang, Jizong Zhao
BACKGROUND: The objective of this study was to elucidate the clinical features, surgical treatment, and long-term outcome in pediatric patients with moyamoya disease (MMD). METHODS: We retrospectively reviewed 46 pediatric patients with hemorrhagic MMD at Beijing Tiantan Hospital. Clinical features, radiological findings, and outcomes were analyzed. RESULTS: The mean age at diagnosis was 13.6 ± 3.6 years. The ratio of girls to boys was 1...
March 19, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29551220/contrast-enhanced-color-coded-doppler-sonography-in-moyamoya-disease-a-retrospective-study
#9
Woo-Keun Seo, Chang-Woon Choi, Chi Kyung Kim, Kyungmi Oh
The purpose of this study was to validate the feasibility of contrast-enhanced transcranial Doppler sonography (CE-TCCD) in the diagnosis of Moyamoya disease (MMD). CE-TCCD data on patients with MMD were analyzed. The CE-TCCD data were classified qualitatively into four patterns by two independent investigators: normal vascular color Doppler signal (pattern 1), augmented color Doppler signal with identifiable vascular structure (pattern 2), confluent color Doppler signal filling more than two-thirds of the display frame without identifiable vascular structure (pattern 3) and confluent color Doppler signal filling full display (pattern 4)...
March 15, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29550248/revascularization-experience-and-results-in-ischaemic-cerebrovascular-disease-moyamoya-disease-and-carotid-occlusion
#10
Fuat Arikan, Marta Rubiera, Joaquín Serena, Ana Rodríguez-Hernández, Darío Gándara, Carles Lorenzo-Bosquet, Alejandro Tomasello, Ivette Chocrón, Maximiliano Quintana-Corvalan, Juan Sahuquillo
INTRODUCTION: Cerebral revascularization techniques are an indispensable tool in the current armamentarium of vascular neurosurgeons. We present revascularization surgery experience and results in both moyamoya disease and occlusive cerebral ischaemia. PATIENTS AND METHODS: Patients with ischaemic occlusive disease and moyamoya disease who underwent microsurgical revascularization between October 2014 and September 2017 were analysed. RESULTS: In the study period, 23 patients with occlusive ischaemic disease underwent microsurgical revascularization...
March 14, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29545885/clinical-and-angiographic-outcomes-after-combined-direct-and-indirect-bypass-in-adult-patients-with-moyamoya-disease-a-retrospective-study-of-76-procedures
#11
Jinbing Zhao, Hongyi Liu, Yuanjie Zou, Wenbin Zhang, Shengxue He
The present retrospective study was performed to evaluate the clinical outcome, as well as post-operative collateral formation and revascularization patterns in combined bypass. Surgical revascularization has been the mainstay of treatment for moyamoya patients. A total of 76 hemispheres from 64 moyamoya patients undergoing combined superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis and encephalo-duro-myo-synangiosis (EDMS) were retrospectively reviewed. Computed tomography perfusion and DSA were routinely performed...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29530706/cerebral-hyperperfusion-syndrome-following-revascularization-surgery-in-moyamoya-disease-region-symptom-mapping-and-estimating-a-critical-threshold
#12
Ken Kazumata, Haruto Uchino, Kikutaro Tokairin, Masaki Ito, Tohru Shiga, Toshiya Osanai, Masahito Kawabori
BACKGROUND: Cerebral hyperperfusion complicates the postoperative course of patients with moyamoya disease (MMD) following direct revascularization surgery. There is no clear distinction between cerebral hyperperfusion syndrome and benign postoperative increase in regional cerebral blood flow (rCBF). OBJECTIVE: The present study aimed to determine clinically relevant changes in rCBF, anatomical correlations, and factors associated with transient neurological symptoms following revascularization surgery in MMD...
March 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29530705/the-optimum-operative-time-of-revascularization-for-the-patients-with-moyamoya-disease-following-acute-onset
#13
Shuangxiang Xu, Jianjian Zhang, Sheng Wang, Zhengwei Li, Zhongwei Xiong, Xiaolin Wu, Can Xin, Hao Wang, Yu Wang, Jincao Chen
BACKGROUND: It is still controversial whether surgery should be performed on patients suffering from acute onset of moyamoya disease (MMD). The present study aims at determining an optimum operative time for the patients with MMD. METHODS: We retrospectively analyzed 57 patients with MMD admitted between January 2016 and June 2017. All of them consented to combined revascularization. Considering the time interval between acute onset and surgery, we accordingly divided all patients into the early group and the later group if the latter exceeded 90 days...
March 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29521587/letter-to-the-editor-direct-versus-indirect-bypass-for-adult-ischemic-type-moyamoya-disease
#14
Rimal H Dossani, Hai Sun
No abstract text is available yet for this article.
March 9, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29516454/-moyamoya-disease-clinical-neuroradiological-neuropsychological-and-genetic-perspective
#15
R Espert, M Gadea, M Alino, J Oltra-Cucarella, C Perpina
INTRODUCTION: Moyamoya disease (MMD) is an occlusive cerebrovascular disease characterized by progressive stenosis or occlusion in the terminal portion of the bilateral internal carotid arteries, affecting both children and adults. AIM: To conduct a review and update on MMD from a clinical, neuroradiological, neuropsychological and genetic perspective. DEVELOPMENT: In this pathology, which occurs with ischemia or cerebral hemorrhage, an unusual compensatory vascular network (moyamoya vessels) develops at the base of the brain in the form of collateral channels...
March 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29511372/clinical-importance-of-the-anterior-choroidal-artery-a-review-of-the-literature
#16
REVIEW
Jing Yu, Ning Xu, Ying Zhao, Jinlu Yu
The anterior choroidal artery (AChA) is a critical artery in brain physiology and function. The AChA is involved in many diseases, including aneurysm, brain infarct, Moyamoya disease (MMD), brain tumor, arteriovenous malformation (AVM), etc. The AChA is vulnerable to damage during the treatment of these diseases and is thus a very important vessel. However, a comprehensive systematic review of the importance of the AChA is currently lacking. In this study, we used the PUBMED database to perform a literature review of the AChA to increase our understanding of its role in neurophysiology...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29498573/high-rebleeding-risk-associated-with-choroidal-collateral-vessels-in-hemorrhagic-moyamoya-disease-analysis-of-a-nonsurgical-cohort-in-the-japan-adult-moyamoya-trial
#17
Takeshi Funaki, Jun C Takahashi, Kiyohiro Houkin, Satoshi Kuroda, Shigekazu Takeuchi, Miki Fujimura, Yasutake Tomata, Susumu Miyamoto
OBJECTIVE Choroidal collateral vessels typical of moyamoya disease have received attention as a potential bleeding source. The authors' previous angiographic cross-sectional analysis suggested a possible association between choroidal collaterals and posterior hemorrhage, indicating a high risk for rebleeding. The present longitudinal analysis is intended to determine whether choroidal collaterals are a predictor of rebleeding in hemorrhagic moyamoya disease. METHODS The Japan Adult Moyamoya Trial group designed an ancillary cohort study using 5-year follow-up data on 37 patients included in the nonsurgical arm of the original randomized controlled trial and compared the rebleeding rate of those with and those without choroidal collaterals, represented by the connection between the anterior or posterior choroidal arteries and the medullary arteries...
March 2, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29483617/dysregulation-of-rnf213-promotes-cerebral-hypoperfusion
#18
Takaaki Morimoto, Jun-Ichiro Enmi, Yorito Hattori, Satoshi Iguchi, Satoshi Saito, Kouji H Harada, Hiroko Okuda, Yohei Mineharu, Yasushi Takagi, Shohab Youssefian, Hidehiro Iida, Susumu Miyamoto, Masafumi Ihara, Hatasu Kobayashi, Akio Koizumi
RNF213 is a susceptibility gene for moyamoya disease, yet its exact functions remain unclear. To evaluate the role of RNF213 in adaptation of cerebral blood flow (CBF) under cerebral hypoperfusion, we performed bilateral common carotid artery stenosis surgery using external microcoils on Rnf213 knockout (KO) and vascular endothelial cell-specific Rnf213 mutant (human p.R4810K orthologue) transgenic (EC-Tg) mice. Temporal CBF changes were measured by arterial spin-labelling magnetic resonance imaging. In the cortical area, no significant difference in CBF was found before surgery between the genotypes...
February 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29483367/correction-to-surgical-management-of-moyamoya-disease
#19
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29483323/clinical-features-course-and-outcomes-of-a-uk-cohort-of-pediatric-moyamoya
#20
Sara C Tho-Calvi, Dominic Thompson, Dawn Saunders, Shakti Agrawal, Anna Basu, Manali Chitre, Gabriel Chow, Frances Gibbon, Anthony Hart, Krishnaraya Kamath Tallur, Fenella Kirkham, Rachel Kneen, Helen McCullagh, Leena Mewasingh, Grace Vassallo, Kayal Vijayakumar, Elizabeth Wraige, Tong Hong Yeo, Vijeya Ganesan
OBJECTIVE: To describe characteristics and course of a large UK cohort of children with moyamoya from multiple centers and examine prognostic predictors. METHODS: Retrospective review of case notes/radiology, with use of logistic regression to explore predictors of outcome. RESULTS: Eighty-eight children (median presentation age 5.1 years) were included. Thirty-six presented with arterial ischemic stroke (AIS) and 29 with TIA. Eighty had bilateral and 8 unilateral carotid circulation disease; 29 patients had posterior circulation involvement...
February 27, 2018: Neurology
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