A Case of Moyamoya Disease With Spontaneous Regression of Posterior Choroidal Artery Aneurysm After Improvement in Obesity and Administration of an Antihypertensive Drug.

A 24-year-old obese female (height = 162 cm, weight = 84 kg, and BMI = 32.0) developed transient dysarthria and left hemiparesis, which was diagnosed as moyamoya disease (MMD) after imaging studies. Cerebral angiography and single photon emission computed tomography studies revealed that the above symptoms were caused by hemodynamic insufficiency in the bilateral hemispheres with right-sided predominance, and a right-sided superficial temporal artery-middle cerebral artery bypass was performed.

Analysis of Optic Disc Morphology and the Peripapillary Retinal and Choroidal Thickness by the Swept Source Optical Coherence Tomography in Patients with Moyamoya Disease.

Introduction: Moyamoya Disease (MMD) is a chronic cerebrovascular occlusive disorder. Ocular involvement in patients with MMD has increasingly been recognized and reported in recent years. This study aimed to investigate the changes of optic disc morphology and the peripapillary retinal and choroidal thickness in patients with MMD.

A Case of Moyamoya Vasculopathy Presenting as Simultaneous Ischemic and Hemorrhagic Strokes.

Background: Moyamoya disease (MMD) is a rare pathological state characterized by progressive stenosis of the terminal portion of the internal carotid arteries (ICA). Complications include both ischemic and hemorrhagic strokes, for which there is no curative treatment for MMD. Early diagnosis with surgical intervention is vital for there is no definitive treatment.

Long-Term Outcome of Rescue Stenting for Acute Intracranial Atherosclerotic Stenosis Related Large Vessel Occlusion in Anterior Circulation.

Background And Purpose: Rescue stent (RS) is an accepted rescue option after failed mechanical thrombectomy (MT) for acute ischemic stroke due to intracranial atherosclerotic stenosis (ICAS)-related large vessel occlusion (LVO). However, the long-term outcomes (≥ 12 months) of RS have not yet been elucidated.

Materials And Methods: We retrospectively analyzed the data of 154 patients with RS for ICAS-related LVO, which were identified from prospectively maintained multicenter database of RS after MT failure, to assess good outcome (mRS 0-2), mortality, stroke recurrence, symptomatic intracranial hemorrhage (SICH) and stent patency.

Moyamoya disease and moyamoya syndrome: A case series from multicentre private hospitals in Indonesia.

Background: Moyamoya disease (MMD) and moyamoya syndrome (MMS) are considered rare in Indonesia, without any proper epidemiological data backing this claim. Hence, this case series aims to assess all MMD and MMS cases from the perspective of a multicentre private hospital in Indonesia.

Methods: This is a descriptive analysis using data from the picture archiving and communication system (PACS) from January 2019 to December 2023.

Association of retrograde bypass flow depth along cortical recipient arteries with revascularization outcomes in direct bypass surgery for Moyamoya disease.

Objective: During the cerebral digital subtraction angiography (DSA) follow-up after direct bypass surgery in patients with Moyamoya disease (MMD), we observed different depths of retrograde bypass flow along the original middle cerebral artery (MCA) pathway into the intracranial cavity through the anastomosed recipient vessels. The aim of this study was to investigate the relationship between these varying depths of retrograde bypass flow and the outcomes of revascularization.

Methods: We conducted a retrospective study that included 109 patients (138 hemispheres) diagnosed with MMD and who underwent direct bypass surgery with subsequent DSA follow-up from 2022 to 2023.

Pretreatment factors associated with symptomatic stroke in Moyamoya disease patients: A multicenter study.

Objectives: Moyamoya disease (MMD) is a cerebrovascular disorder marked by the progressive steno-occlusion of the bilateral internal carotid arteries and the formation of abnormal collateral vessel networks at the base of the brain. Previous studies have attempted to identify risk factors predictive of postoperative complications to improve patient management. This study aims to identify pretreatment factors associated with post-bypass symptomatic strokes in MMD patients.

Patient-Reported Outcomes in Childhood Moyamoya Arteriopathy.

Background: Little is known about quality of life, sleep, and mental health in children with moyamoya arteriopathy (MMA). A better understanding of patient-reported outcomes may lead to improved treatment.

Methods: Patients with MMA <26 years old and their caretakers completed validated, age-appropriate questionnaires including the Pediatric Quality of Life (PedsQL) Inventory and Patient-Reported Outcomes Measurement Information System (PROMIS) measuring health-related quality of life, sleep, anxiety, depression, and overall health.

The Management of Symptomatic Moyamoya Disease in Pediatric Patients: A Systematic Review and Meta-Analysis.

Background And Objectives: The optimal management strategy for pediatric patients with symptomatic moyamoya disease (MMD) is not well established. This systematic review and meta-analysis compares surgical vs conservative management and direct/combined bypass (DB/CB) vs indirect bypass (IB) for pediatric patients with symptomatic MMD.

Methods: MEDLINE and PubMed were searched from inception to March 17, 2024.

Deep learning model for automated diagnosis of moyamoya disease based on magnetic resonance angiography.

Background: This study explores the potential of the deep learning-based convolutional neural network (CNN) to automatically recognize MMD using MRA images from atherosclerotic disease (ASD) and normal control (NC).

Methods: In this retrospective study in China, 600 participants (200 MMD, 200 ASD and 200 NC) were collected from one institution as an internal dataset for training and 60 from another institution were collected as external testing set for validation. All participants were divided into training (N = 450) and validation sets (N = 90), internal testing set (N = 60), and external testing set (N = 60).

BRCC3-Associated Syndromic Moyamoya Angiopathy Diagnosed Through Clinical RNA Sequencing.

Moyamoya angiopathy is a cerebral vasculopathy causing progressive stenosis of the internal carotid arteries and the compensatory development of collateral blood vessels, leading to brain ischemia and an increased risk of cerebral haemorrhage. Although multiple non-genetic causes have been associated with moyamoya syndrome, it can also be associated with rare genetic syndromes. Moyamoya Disease 4, characterised by a short stature, hypergonadotropic hypogonadism and facial dysmorphism (MYMY4, OMIM #300845), also referred to as BRCC3-associated moyamoya syndrome, has so far been described in 11 individuals.

Prognostic value of morphology and hemodynamics in moyamoya disease for long-term outcomes and disease progression.

To explore the relationship between morphological and hemodynamic parameters, baseline characteristics, and long-term outcomes in patients with moyamoya disease (MMD) using a computational fluid dynamics model. We retrospectively reviewed 129 patients at Beijing Tiantan hospital between July 2020 and December 2021. Perioperative clinical variables and Suzuki stage were recorded.

Cerebral Oxygen Metabolic Stress in Children and Adults With Large Vessel Vasculopathy Due to Sickle Cell Disease.

Background And Objectives: Large vessel vasculopathy (LVV), or moyamoya syndrome, increases the risk of stroke in patients with sickle cell disease (SCD), yet effective treatments are lacking. In atherosclerotic carotid disease, previous studies demonstrated elevated oxygen extraction fraction (OEF) as a predictor of ipsilateral stroke. In a SCD cohort, we examined hemispheric hemodynamic and oxygen metabolic dysfunction as tissue-based biomarkers of cerebral ischemic risk in patients with LVV.

Endothelial progenitor cell-derived conditioned medium mitigates chronic cerebral ischemic injury through macrophage migration inhibitory factor-activated AKT pathway.

Background: Chronic cerebral ischemia (CCI) is a significant health issue characterized by hypoperfusion due to damage or occlusion of the cerebral or carotid arteries. CCI may lead to progressive cognitive impairment that is considered as a prelude to neurodegenerative diseases, including dementia and Alzheimer's disease (AD). Endothelial progenitor cells (EPCs) have been implicated in vascular repair in ischemic cerebrovascular diseases, primarily by differentiating into endothelial cells (ECs) or through paracrine effects.

Effect of propofol versus sevoflurane on cerebral oxygenation in childhood Moyamoya disease. A near infrared spectroscopy study.

Introduction And Objectives: Anaesthesia during surgery for moyamoya disease (MMD) has different effects on cerebral physiology. Both sevoflurane and propofol have cerebral protective effects, albeit with different mechanisms. We used near infrared spectroscopy (NIRS) to observe the effect of sevoflurane and propofol on rSO in paediatric patients undergoing MMD surgery.

Macrovascular blood flow and microvascular cerebrovascular reactivity are regionally coupled in adolescence.

Cerebrovascular imaging assessments are particularly challenging in adolescent cohorts, where not all modalities are appropriate, and rapid brain maturation alters hemodynamics at both macro- and microvascular scales. In a preliminary sample of healthy adolescents (n = 12, 8-25 years), we investigated relationships between 4D flow MRI-derived blood velocity and blood flow in bilateral anterior, middle, and posterior cerebral arteries and BOLD cerebrovascular reactivity (CVR) in associated vascular territories. As hypothesized, higher velocities in large arteries are associated with an earlier response to a vasodilatory stimulus (cerebrovascular reactivity delay) in the downstream territory.

The Effectiveness of the Moyamoya Healthy Youth Application for the Salutogenesis of Adolescents With Moyamoya Disease: A Randomized Controlled Trial.

Adolescents with moyamoya disease can experience unexpected transient ischemic attacks, significantly impacting their daily lives. This study aimed to examine the effectiveness of the Moyamoya Healthy Youth application for adolescents with moyamoya disease. The research employed a parallel, two-group randomized controlled trial with a repeated measures design.

Spontaneous Epidural Hematomas in a Patient With Sickle Cell Anemia: A Case Report.

Sickle cell disease (SCD) is a systemic organ disease with acute and chronic complications. Neurological complications of SCD include cerebral ischemia, moyamoya syndrome, posterior reversible encephalopathy syndrome, cerebral fat embolism, and cerebral venous sinus thrombosis. Although less frequent, rare hemorrhagic manifestations, such as spontaneous epidural hematoma (EDH), can occur and are associated with increased mortality and morbidity.

Salvage Maneuvers for Occluded Bypass in Cerebral Revascularization Procedures.

Object: Cerebral revascularization is an effective measure for dealing with complicated intracranial aneurysms and ischemic cerebro-vascular disease. Intra-operative thrombosis causing bypass occlusion is a severe issue that cause devastating consequences for complication in revascularization. We report our experiences regarding salvage maneuvers for intraoperative thrombosis in cerebral revascularization procedures and discuss the characteristics and culprits.

Novel method of calculation of MRI perfusion and comparison of single versus double barrel STA-MCA bypass for revascularisation in Moya Moya disease.

Introduction: Moyamoya disease (MMD) is characterised by supraclinoid internal carotid artery (ICA) narrowing causing cerebral parenchyma to starve. Direct and indirect revascularisation techniques are the treatment norm. We provide a clinicoradiological comparison of single and double barrel superficial temporal artery to middle cerebral artery (STA-MCA) bypass for MMD.