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https://www.readbyqxmd.com/read/28341559/-moyamoya-disease-associated-with-kidney-angiodysplasia-in-a-child
#1
A Dibi, Z Maana, F Jabourik, A Bentahila
INTRODUCTION: Moyamoya disease is a progressive, chronic occlusive vascular disease of the circle of Willis arteries leading to the development of collateral circulation to compensate the occlusion. CASE REPORT: An 11-year-old girl presented an abrupt loss of consciousness and a right-sided motor deficit. Clinical examination found hypertension with 220/120mmHg arterial blood pressure. Brain magnetic resonance imaging showed a large left hemispheric ischemic lesion...
March 21, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28327941/degree-of-vascular-encasement-in-sphenoid-wing-meningiomas-predicts-postoperative-ischemic-complications
#2
D Jay McCracken, Raymond A Higginbotham, Jason H Boulter, Yuan Liu, John A Wells, Sameer H Halani, Amit M Saindane, Nelson M Oyesiku, Daniel L Barrow, Jeffrey J Olson
BACKGROUND: Sphenoid wing meningiomas (SWMs) can encase arteries of the circle of Willis, increasing their susceptibility to intraoperative vascular injury and severe ischemic complications. OBJECTIVE: To demonstrate the effect of circumferential vascular encasement in SWM on postoperative ischemia. METHODS: A retrospective review of 75 patients surgically treated for SWM from 2009 to 2015 was undertaken to determine the degree of circumferential vascular encasement (0°-360°) as assessed by preoperative magnetic resonance imaging (MRI)...
January 28, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28303205/aneurysm-of-azygos-anterior-cerebral-artery-associated-with-falcine-meningioma-case-report-and-review-of-the-literature
#3
Lucas C Meguins, Raquel C T Hidalgo, Antônio R Spotti, Dionei F de Morais
BACKGROUND: The azygos anterior cerebral artery (ACA) is an uncommon intracranial vascular anomaly of the circle of Willis. Identification of aneurysm from azygos ACA with anterior falcine meningioma is an extremely rare association. The aim of the present study is to report the case of an adult female with a ruptured aneurysm from azygos ACA in association with an anterior falcine meningioma. CASE DESCRIPTION: A 65-year-old female was admitted in the Emergency Department reporting sudden onset of severe headache...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28300680/evaluation-by-mri-of-silent-brain-infarcts-in-pre-and-post-operative-asymptomatic-carotid-surgery
#4
Remy Pascot, Anne Daoudal, Alain Cardon, Gilles Godet, Antoine Lucas, Elodie Clochard, Jean-Yves Gauvrit, Yann Le Teurnier, Adrien Kaladji
OBJECTIVE: To report the prevalence of Silent Brain Infarcts (SBI) at MRI before and after surgery for asymptomatic high grade carotid stenosis. DESIGN: Single-center retrospective observational study METHODS: Asymptomatic patients who underwent carotid endarterectomy between October 2012 and October 2014 were included. The preoperative assessment included a Doppler and a CT scan dating less than 3 months. A neurological examination was performed during the anesthesia consultation and in the 15 days before surgery...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28284050/incomplete-circle-of-willis-a-risk-factor-for-mesial-temporal-sclerosis
#5
Gokhan Kuyumcu, Richard W Byrne, Robert J Dawe, Mehmet Kocak
OBJECTIVE: The aim of this study was to investigate whether there may be a correlation between the anatomical variants of Circle of Willis (CoW) and presence/laterality of mesial temporal sclerosis (MTS). METHODS: We retrospectively identified the CoW variants on Wada angiograms in 71 patients with pathologically proven MTS. Angiograms were interpreted by two radiologists independently and blinded to clinical data. We divided the anterior and posterior components of the CoW into functionally complete and functionally incomplete groups...
March 2, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28267525/relationship-between-white-matter-hyperintensities-volume-and-the-circle-of-willis-configurations-in-patients-with-carotid-artery-pathology
#6
Luca Saba, Roberto Sanfilippo, Michele Porcu, Pierleone Lucatelli, Roberto Montisci, Fulvio Zaccagna, Jasjit Suri, Michele Anzidei, Max Wintermark
PURPOSE: We aimed to assess if there is a difference of distribution and volume of white matter hyperintensities (WMH) in the brain according to the Circle of Willis (CoW) configuration in patients with carotid artery pathology. MATERIAL AND METHODS: One-hundred consecutive patients (79 males, 21 females; mean age 70 years; age range 46-84 years) that underwent brain MRI before carotid endarterectomy (CEA) were included. FLAIR-WMH lesion volume was performed using a semi-automated segmentation technique and the status of the circle of Willis was assessed by two neuroradiologists in consensus...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28248916/light-induced-hemiplegia-an-atypical-case-of-retinal-steal-syndrome
#7
David Kerek, Sami Al Kasab, Michael U Antonucci, Raymond D Turner, Tanya N Turan
Atherosclerosis affecting the carotid arteries accounts for up to 20% of ischemic strokes 1. The clinical effects of atherosclerotic occlusive disease vary according to multiple factors, one of which is collateral circulation. In response to a chronic decrease in cerebral perfusion from atherosclerotic occlusion, alternative flow pathways, or collaterals, develop in a variety of patterns. In the setting of carotid occlusion, flow from the Circle of Willis, if complete, often comprises the main cerebral collateral network...
March 2017: Neurologist
https://www.readbyqxmd.com/read/28243347/mycotic-intracranial-aneurysm-secondary-to-left-ventricular-assist-device-infection
#8
Juan M Remirez, Yasmin Sabet, Marshall Baca, Alberto Maud, Salvador Cruz-Flores, Gustavo J Rodriguez, Debabrata Mukherjee, Aamer Abbas
BACKGROUND: Mycotic aneurysms are a complication of infective endocarditis. Infection of left ventricular assist devices (LVADs) may lead to bacteremia and fever causing complications similar to those seen in patients with prosthetic valve endocarditis. Intracranial mycotic aneurysms are rare, and their presence is signaled by the development of subarachnoid hemorrhage in the setting of bacteremia and aneurysms located distal to the circle of Willis. CASE PRESENTATION: We present the case of a patient with a LVAD presenting with headache who is found to have an intracranial mycotic aneurysm through computed tomography angiography of the head...
January 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/28237043/tuberous-sclerosis-complex-and-polycystic-kidney-disease-contiguous-gene-syndrome-with-moyamoya-disease
#9
Jonathan Lai, Lopa Modi, Daryl Ramai, Matthew Tortora
Tuberous sclerosis complex (TSC) and autosomal dominant polycystic kidney disease (ADPKD) are two diseases sharing close genetic loci on chromosome 16. Due to contiguous gene syndrome, also known as contiguous gene deletion syndrome, the proximity of TSC2 and PKD1 genes increases the risk of co-deletion resulting in a shared clinical presentation. Furthermore, Moyamoya disease (MMD) is a rare vaso-occlusive disease in the circle of Willis. We present the first case of TSC2/PKD1 contiguous gene syndrome in a patient with MMD along with detailed histopathologic, radiologic, and cytogenetic analyses...
January 3, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28223258/the-neurologic-protection-of-unilateral-versus-bilateral-antegrade-cerebral-perfusion-in-aortic-arch-surgery-with-deep-hypothermic-circulatory-arrest-a-study-of-77-cases
#10
Bowen Li, Xiaoping Hu, Zhiwei Wang
BACKGROUD: Unilateral and bilateral antegrade cerebral perfusions (ACP) are recognized methods of cerebral protection in aortic arch surgery. However, the adequacy of cerebral protection in aortic arch surgery with deep hypothermic circulatory arrest is controversial. In this study, we compared unilateral and bilateral ACP of cerebral protection in aortic arch surgery by assessing the patient's intraoperative and postoperative brain function. METHODS: A total of 77 patients undergoing aortic arch surgery were included in this study...
February 20, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28196918/m1-macrophages-are-required-for-murine-cerebral-aneurysm-formation
#11
Kamil W Nowicki, Koji Hosaka, Frank J Walch, Edward W Scott, Brian L Hoh
INTRODUCTION: Macrophages and neutrophils have been separately implicated in cerebral aneurysm formation. The interactions between different myeloid subsets and the contributions of macrophage phenotypes in these lesions over time are not known. The purpose of the study was to examine macrophage phenotypic changes in cerebral aneurysms. METHODS: We induced aneurysm formation in C57BL/6 mice and quantified contributions of M1 and M2 macrophages in aneurysm specimens with or without neutrophil blockade...
February 14, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28187986/age-dependence-of-critical-pressure-in-the-segments-and-branches-of-the-circle-of-willis
#12
Adam Piechna, Leszek Lombarski, Paweł Krajewski, Bogdan Ciszek, Krzysztof Cieslicki
Spontaneous intracranial haemorrhage is one of the most dramatic neurological disasters. The source of haemorrhage is linked to the pathology of the arterial wall or is unknown. Because the risk of haemorrhagic stroke increases with age, we tried to investigate the relationship between age and rupture pressure of cerebral arteries. In the presented study, 51 segments of large cerebral arteries (at the level of the circle of Willis and its incoming and outgoing branches) were obtained from 33 cadaver brains aged 12-86 years...
January 21, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28181413/morphometry-and-variability-of-the-brain-arterial-circle-in-chinchilla-chinchilla-laniger-molina
#13
Jacek Kuchinka
Arterial circles of brains from 70 adult chinchillas were filled with synthetic latex. The arterial circle of the brain is formed as the result of vertebral arteries being merged into the basilar artery. Caudally, both vertebral arteries gave rise to the ventral spinal artery. The ventral spinal artery splits into tiny cerebellar vessels, the pontine and cochlear branches. Distally, the basilar artery ramified into two terminal branches that formed the arterial circle of brain, rostrally open in most cases (75%)...
February 9, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28179389/homonymous-hemianopia-in-the-primary-antiphospholipid-syndrome
#14
Derek Kwun-Hong Ho, Rishi Ramessur, Mradul Gupta, John P Mathews
A woman aged 26 years was referred by her GP to the eye casualty department with sudden-onset left homonymous hemianopia and right-sided headache. Full ophthalmic examination was normal with the exception of a left homonymous hemianopia confirmed with automated perimetry. Urgent CT imaging revealed a non-haemorrhagic cerebral infarct in the right parieto-occipital region. Subsequent blood tests confirmed a diagnosis of antiphospholipid syndrome with positivity in IgG anticardiolipin antibody, IgG anti-β2-GP1 antibody and the Lupus anticoagulant screen...
February 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28173711/association-between-patency-of-the-circle-of-willis-and-diabetes-mellitus-in-patients-with-cerebral-ischaemic-stroke
#15
Ying Chi, Zu-Neng Lu
Objective To examine patency of the cerebral anterior and posterior communicating arteries in patients with ischaemic stroke with or without diabetes mellitus. Methods This retrospective study included patients with acute ischaemic stroke treated between July 2011 and May 2016. Cerebral infarction was evaluated by magnetic resonance imaging. Anterior and posterior communicating-artery patency was determined using magnetic resonance angiography. Vessels were defined as patent or occluded. Results Out of 1 406 patients, incidence of vertebral basilar artery brain infarction and posterior cerebral artery brain infarction were significantly higher in patients with diabetes versus those without diabetes (35...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28150270/circle-of-willis-variations-and-artery-diameter-measurements-in-the-turkish-population
#16
Ibrahim Önder Yeniçeri, Neşat Çullu, Mehmet Deveer, Emine Neşe Yeniçeri
BACKGROUND: The aim of this study was to evaluate the frequency of COW variations and the measurements of the COW vessel diameters in the Turkish population. MATERIALS AND METHODS: The patient population for this single-centre, retrospective study was formed of patients who had brain MRA. A total of 384 subjects were included in the study. The 3D TOF technique was used for MRA imaging to evaluate the anatomy of the COW. Variations in the COW were recorded. The diameter of the critical arteries of the COW were measured...
February 2, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28126368/circulating-bacterial-lipopolysaccharide-induced-inflammation-reduces-flow-in-brain-irrigating-arteries-independently-from-cerebrovascular-prostaglandin-production
#17
Frédéric Villéga, Jean-Christophe Delpech, Marion Griton, Caroline André, Jean-Michel Franconi, Sylvain Miraux, Jan Pieter Konsman
Brain dysfunction is a frequent complication of the systemic inflammatory response to bacterial infection or sepsis. In the present work, the effects of intravenous bacterial lipopolysaccharide (LPS) administration on cerebral arterial blood flow were assessed with time-of-flight (TOF)-based magnetic resonance angiography (MRA) in mice. Cerebral expression of the transcription factors nuclear factor-kappaB (NF-κB) and c-Fos and that of enzymes synthesizing vasoactive mediators, such as prostaglandins and nitric oxide, known to be increased under inflammatory conditions, were studied in the same animals...
January 23, 2017: Neuroscience
https://www.readbyqxmd.com/read/28068236/cerebrovascular-diseases-in-childhood-cancer-survivors-role-of-the-radiation-dose-to-willis-circle-arteries
#18
Chiraz El-Fayech, Nadia Haddy, Rodrigue Sètchéou Allodji, Cristina Veres, Fara Diop, Amar Kahlouche, Damien Llanas, Angela Jackson, Carole Rubino, Catherine Guibout, Hélène Pacquement, Odile Oberlin, Cécile Thomas-Teinturier, Pierre-Yves Scarabin, Jean Chavaudra, Dimitry Lefkopoulos, Maurice Giroud, Yannick Bejot, Valérie Bernier, Christian Carrie, Ibrahima Diallo, Florent de Vathaire
BACKGROUND AND PURPOSE: The aim of this study was to investigate the role of radiation dose received to the circle of Willis (WC) during radiation therapy (RT) and of potential dose-response modifiers on the risk of stroke after treatment of childhood cancer. METHODS: We evaluated the risk factors for stroke in a cohort of 3172 5-year survivors of childhood cancer who were followed up for a median time of 26 years. Radiation doses to the WC and brain structures were estimated for each of the 2202 children who received RT...
February 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#19
S Rudin
1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures. Along with development of catheters, embolic materials, pushable coils and the GDC coils there was simultaneous development and improvement of 2D DSA image quality and the introduction of 3D DSA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#20
Jeffrey Siewerdsen, Rebecca Fahrig
1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures. Along with development of catheters, embolic materials, pushable coils and the GDC coils there was simultaneous development and improvement of 2D DSA image quality and the introduction of 3D DSA...
June 2016: Medical Physics
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