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https://www.readbyqxmd.com/read/28431024/radiosurgery-for-unruptured-brain-arteriovenous-malformations-an-international-multicenter-retrospective-cohort-study
#1
Dale Ding, Robert M Starke, Hideyuki Kano, John Y K Lee, David Mathieu, John Pierce, Paul Huang, Symeon Missios, Caleb Feliciano, Rafael Rodriguez-Mercado, Luis Almodovar, Inga S Grills, Danilo Silva, Mahmoud Abbassy, Douglas Kondziolka, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
BACKGROUND: The role of intervention in the management of unruptured brain arteriovenous malformations (AVM) is controversial. OBJECTIVE: To analyze in a multicenter, retrospective cohort study, the outcomes following radiosurgery for unruptured AVMs and determine predictive factors. METHODS: We evaluated and pooled AVM radiosurgery data from 8 institutions participating in the International Gamma Knife Research Foundation. Patients with unruptured AVMs and ≥12 mo of follow-up were included in the study cohort...
April 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28424268/favorable-outcome-in-patients-with-intracranial-hemorrhage-due-to-ruptured-brain-avm
#2
EDITORIAL
Dennis R Buis
No abstract text is available yet for this article.
April 19, 2017: Neurology
https://www.readbyqxmd.com/read/28421824/thrombosis-of-the-draining-vein-causes-intracranial-haemorrhage-in-the-natural-history-of-brain-arteriovenous-malformation-case-report
#3
Raita Fukaya, Katsuhiro Mizutani, Masahito Fukuchi, Koji Fujii
Rupture of arteriovenous malformations (AVM) may be caused by venous outflow restriction, but there is no radiographic evidence of this. We report a case showing only a venous thrombus preceding intracranial haemorrhage from AVM. This is the first evidence that venous thrombus results in AVM rupture in its natural history.
April 19, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28414573/phosphatidylserine-translocation-after-radiosurgery-in-an-animal-model-of-arteriovenous-malformation
#4
Newsha Raoufi Rad, Lucinda S McRobb, Zhenjun Zhao, Vivienne S Lee, Nirav J Patel, Anas Sarwar Qureshi, Michael Grace, Joshua J McHattan, Jude V Amal Raj, Hong Duong, Saleh R Kashba, Marcus A Stoodley
Phosphatidylserine (PS) is asymmetrically distributed across the plasma membrane, located predominantly on the inner leaflet in healthy cells. Translocation of PS to the outer leaflet makes it available as a target for biological therapies. We examined PS translocation after radiosurgery in an animal model of brain arteriovenous malformation (AVM). An arteriovenous fistula was created by end-to-side anastomosis of the left external jugular vein to the common carotid artery in 6-week-old, male Sprague Dawley rats...
April 17, 2017: Radiation Research
https://www.readbyqxmd.com/read/28397378/basal-subarachnoid-hemorrhage-by-rupture-of-arteriovenous-malformation-at-the-cerebellopontine-angle
#5
Mio Takayama, Masayuki Kashiwagi, Kenji Hara, Aya Matsusue, Brian Waters, Natsuki Ikematsu, Shin-Ichi Kubo
A man in his late forties had lived as a recluse for more than ten years. He was found dead in his room. At autopsy, subarachnoid hemorrhage (SAH) was detected at the base of the brain, which weighed 1333 g. The cerebellar tonsil was swollen. The cerebral ventricle was enlarged and filled with blood. A hematoma was observed in the upper part of the left side of the cerebellar hemisphere. The location and size of SAH in this case indicated that the rupture of a cerebral aneurysm (CA) had occurred; however, CA was not detected...
April 10, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28389875/european-consensus-conference-on-unruptured-brain-avms-treatment-supported-by-eans-esmint-egks-and-sinch
#6
Marco Cenzato, Edoardo Boccardi, Ettore Beghi, Peter Vajkoczy, Istvan Szikora, Enrico Motti, Luca Regli, Andreas Raabe, Shalva Eliava, Andreas Gruber, Torstein R Meling, Mika Niemela, Alberto Pasqualin, Andrey Golanov, Bengt Karlsson, Andras Kemeny, Roman Liscak, Bodo Lippitz, Matthias Radatz, Alessandro La Camera, René Chapot, Civan Islak, Laurent Spelle, Alberto Debernardi, Elio Agostoni, Martina Revay, Michael K Morgan
In December of 2016, a Consensus Conference on unruptured AVM treatment, involving 24 members of the three European societies dealing with the treatment of cerebral AVMs (EANS, ESMINT, and EGKS) was held in Milan, Italy. The panel made the following statements and general recommendations: (1) Brain arteriovenous malformation (AVM) is a complex disease associated with potentially severe natural history; (2) The results of a randomized trial (ARUBA) cannot be applied equally for all unruptured brain arteriovenous malformation (uBAVM) and for all treatment modalities; (3) Considering the multiple treatment modalities available, patients with uBAVMs should be evaluated by an interdisciplinary neurovascular team consisting of neurosurgeons, neurointerventionalists, radiosurgeons, and neurologists experienced in the diagnosis and treatment of brain AVM; (4) Balancing the risk of hemorrhage and the associated restrictions of everyday activities related to untreated unruptured AVMs against the risk of treatment, there are sufficient indications to treat unruptured AVMs grade 1 and 2 (Spetzler-Martin); (5) There may be indications for treating patients with higher grades, based on a case-to-case consensus decision of the experienced team; (6) If treatment is indicated, the primary strategy should be defined by the multidisciplinary team prior to the beginning of the treatment and should aim at complete eradication of the uBAVM; (7) After having considered the pros and cons of a randomized trial vs...
April 7, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28377246/awake-surgery-for-brain-vascular-malformations-and-moyamoya-disease
#7
Rami James N Aoun, Mithun G Sattur, Chandan Krishna, Amen Gupta, Matthew E Welz, Allan D Nanney, Antoun H Koht, Matthew C Tate, Katherine H Noe, Joseph I Sirven, Barrett J Anderies, Patrick B Bolton, Terry L Trentman, Richard S Zimmerman, Kristin R Swanson, Bernard R Bendok
OBJECTIVE: While a significant amount of experience has accumulated for awake procedures for brain tumor, epilepsy and carotid surgery, its utility for intracranial neurovascular indications remains largely undefined. Awake surgery, for select neurovascular cases, offers the advantage of precise brain mapping and robust neurological monitoring during surgery for lesions in eloquent areas, avoidance of potential hemodynamic instability, and possible faster recovery. Additionally, it opens the window for perilesional epileptogenic tissue resection with potentially less risk for iatrogenic injury...
April 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28351522/dynamic-conformal-arc-radiosurgery-for-arteriovenous-malformations-outcome-and-influence-of-clinical-and-dosimetrical-data
#8
Karen Clement-Colmou, Vincent Roualdes, Stéphane-André Martin, Stephanie Josset, Hubert Desal, Loïc Campion, François Thillays
PURPOSE: To assess efficacy, toxicity, and their predictive factors for dynamic conformal arc arteriovenous malformations (AVM) stereotactic radiosurgery. METHOD: Data concerning 90 consecutive patients were retrospectively studied. Clinical, radiological, dosimetrical data and quality indexes were computed. RESULTS: AVM median volume was 1.06cc. Median prescribed dose was 22Gy. Total occlusion was obtained for 69% of patients. Post-radiosurgery annual hemorrhage rate was 2...
March 25, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28345540/epidemiological-features-of-nontraumatic-spontaneous-subarachnoid-hemorrhage-in-china-a-nationwide-hospital-based-multicenter-study
#9
Jian-Ping Song, Wei Ni, Yu-Xiang Gu, Wei Zhu, Liang Chen, Bin Xu, Bin Leng, Yan-Long Tian, Ying Mao
BACKGROUND: Nontraumatic spontaneous subarachnoid hemorrhage (SAH) is associated with a high mortality. This study was conducted to investigate the epidemiological features of nontraumatic spontaneous SAH in China. METHODS: From January 2006 to December 2008, the clinical data of patients with nontraumatic SAH from 32 major neurosurgical centers of China were evaluated. Emergent digital subtraction angiography (DSA) was performed for the diagnosis of SAH sources in the acute stage of SAH (≤3 days)...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28344181/stereotactic-radiosurgery-for-pediatric-high-grade-brain-arteriovenous-malformations-our-experience-and-review-of-literature
#10
Mohana Rao Patibandla, Dale Ding, Zhiyuan Xu, Jason P Sheehan
INTRODUCTION: Although high-grade AVMs pose a particularly high lifetime hemorrhage risk to pediatric patients (age <18 years), little is known about the treatment outcomes. Therefore, the aim of this retrospective cohort study was to evaluate the outcomes after single-session stereotactic radiosurgery (SRS) for pediatric high-grade AVMs. METHODS: we reviewed baseline and treatment outcomes data from pediatric patient's age less than 18 years with SM Grade IV AVMs treated with SRS in a single session at our institution...
March 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28344176/stereotactic-radiosurgery-for-a-randomized-trial-of-unruptured-brain-arteriovenous-malformations-aruba-eligible-spetzler-martin-grade-i-and-ii-arteriovenous-malformations-a-multicenter-study
#11
Dale Ding, Robert M Starke, Hideyuki Kano, David Mathieu, Paul P Huang, Douglas Kondziolka, Caleb Feliciano, Rafael Rodriguez-Mercado, Luis Almodovar, Inga S Grills, Danilo Silva, Mahmoud Abbassy, Symeon Missios, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
OBJECTIVE: A Randomized Trial of Unruptured Brain Arteriovenous Malformations (ARUBA) found better short-term outcomes after conservative management compared to intervention for unruptured arteriovenous malformations (AVM). However, since Spetzler-Martin (SM) grade I-II AVMs have the lowest treatment morbidity, sufficient follow-up of these lesions may demonstrate a long-term benefit from intervention. The aim of this multicenter, retrospective cohort study is to assess the outcomes after stereotactic radiosurgery (SRS) for ARUBA-eligible SM grade I-II AVMs...
March 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28336444/tool-tissue-interaction-forces-in-brain-arteriovenous-malformation-surgery
#12
Taku Sugiyama, Liu Shi Gan, Kourosh Zareinia, Sanju Lama, Garnette R Sutherland
OBJECTIVE: Surgical resection of a brain arteriovenous malformation (AVM) poses a technical challenge due to the fragility and number of small feeding and draining vessels around the nidus. Acquiring knowledge of optimal force applied to such tissue is important in surgical performance and education. METHODS: A force sensing bipolar forceps was developed through installation of strain gauge sensors, and force profiles were obtained from two AVM surgeries. The force data associated with vessel injury, unsuccessful trial, was compared with that from successful trials...
March 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28328605/unusual-association-cerebral-arteriovenous-malformation-and-chiari-type-i-malformation
#13
Hayri Ogul, Mecit Kantarci
Cerebral arteriovenous malformation (AVM) is a common type of cerebral vascular malformation. The imaging findings are enlarged vessels, thrombosed sinuses, and hemorrhage or gliosis on adjacent brain parenchyma. Magnetic resonance (MR) imaging can be used safely for diagnosis. Chiari type I malformation is characterized by a caudal descent of the cerebellar tonsil. Coincidence of cerebral AVM and Chiari type I malformation is very rare. In this paper, the authors report MR imaging findings of a patient with coincidence of cerebral AVM and Chiari type I malformation...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28327955/differences-in-functional-outcome-across-subtypes-with-spetzler-martin-grade-ii-arteriovenous-malformations
#14
Alice L Hung, Wuyang Yang, Erick M Westbroek, Tomas Garzon-Muvdi, Justin M Caplan, Maria Braileanu, Joanna Y Wang, Geoffrey P Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
BACKGROUND: The Spetzler-Martin grading system for brain arteriovenous malformations (AVMs) is based on size (S), eloquence (E), and deep venous drainage (V). However, variation exists due to subgroup heterogeneity. While previous studies have demonstrated variations in outcomes within grade III AVMs, no studies have focused on grade II AVM subtypes. OBJECTIVE: We aim to delineate how functional outcomes differ among patients with subtypes of grade II AVMs. METHODS: We retrospectively reviewed patients with AVMs evaluated at our institution from 1990 to 2013...
February 4, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28324183/multimodality-management-and-outcomes-of-brain-arterio-venous-malformations-avms-in-children-personal-experience-and-review-of-the-literature-with-specific-emphasis-on-age-at-first-avm-bleed
#15
REVIEW
Anan Shtaya, John Millar, Owen Sparrow
PURPOSE: The purpose of this paper is to study the presentation and analyse the results of multimodality treatment of brain arterio-venous malformations (AVMs) in children at our centre and review age at first AVM rupture in the literature. METHODS: Of 52 patients aged <18 years, 47 with brain AVMs (27 males and 20 females) aged 4-17 years (mean 12.2) were retrospectively reviewed. PubMed search revealed five additional studies including 267 patients where the prevalence of age-related AVMs rupture was analysed...
April 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28323192/multimodality-management-of-spetzler-martin-grade-3-brain-arteriovenous-malformations-with-subgroup-analysis
#16
Isaac Josh Abecassis, John D Nerva, Abdullah Feroze, Jason Barber, Basavaraj V Ghodke, Louis J Kim, Laligam N Sekhar
INTRODUCTION: Spetzler-Martin grade 3 (SM3) lesions entail 4 distinct subtypes described based on size, eloquence, and deep venous drainage (DVD) (3A-3D). The ideal management of each is contentious, and the results of A Randomized Trial of Unruptured Brain AVMs (ARUBA) introduced additional controversy and attention towards management strategies of unruptured bAVMs. METHODS: We retrospectively reviewed 114 patients with treated SM3 bAVMs, including both ruptured and unruptured lesions...
March 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28296312/two-year-experience-with-the-commercial-gamma-knife-check-software
#17
Andy Yuanguang Xu, Jagdish Bhatnagar, Greg Bednarz, Josef Novotny, John Flickinger, L Dade Lunsford, M Saiful Huq
The Gamma Knife Check software is an FDA approved second check system for dose calculations in Gamma Knife radiosurgery. The purpose of this study was to evaluate the accuracy and the stability of the commercial software package as a tool for independent dose verification. The Gamma Knife Check software version 8.4 was commissioned for a Leksell Gamma Knife Perfexion and a 4C unit at the University of Pittsburgh Medical Center in May 2012. Independent dose verifications were performed using this software for 319 radiosurgery cases on the Perfexion and 283 radiosurgery cases on the 4C units...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28283870/-dirty-coagulation-technique-as-an-alternative-to-microclips-for-control-of-bleeding-from-deep-feeders-during-brain-arteriovenous-malformation-surgery
#18
Danil A Kozyrev, Peeraphong Thiarawat, Behnam Rezai Jahromi, Patcharin Intarakhao, Joham Choque-Velasquez, Ferzat Hijazy, Mario K Teo, Juha Hernesniemi
BACKGROUND: Meticulous haemostasis is one of the most important factors during microneurosurgical resection of brain arteriovenous malformation (AVM). Controlling major arterial feeders and draining veins with clips and bipolar coagulation are well-established techniques, while managing with bleeding from deep tiny vessels still proves to be challenging. This technical note describes a technique used by the senior author in AVM surgery for last 20 years in dealing with the issue highlighted...
May 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28267351/contemporary-imaging-of-cerebral-arteriovenous-malformations
#19
Eric Tranvinh, Jeremy J Heit, Lotfi Hacein-Bey, James Provenzale, Max Wintermark
OBJECTIVE: Brain arteriovenous malformation (AVM) rupture results in substantial morbidity and mortality. The goal of AVM treatment is eradication of the AVM, but the risk of treatment must be weighed against the risk of future hemorrhage. CONCLUSION: Imaging plays a vital role by providing the information necessary for AVM management. Here, we discuss the background, natural history, clinical presentation, and imaging of AVMs. In addition, we explain advances in techniques for imaging AVMs...
March 7, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28246008/compliance-of-systematic-reviews-articles-in-brain-arteriovenous-malformation-with-prisma-statement-guidelines-review-of-literature
#20
REVIEW
T Akhigbe, A Zolnourian, D Bulters
BACKGROUND: The knowledge of reporting compliance of systematic reviews with PRISMA guidelines may assist in improving the quality of secondary research in brain AVM management and subsequently application to patient population and clinical practice. This may allow researchers and clinicians to be equipped to appraise existing literatures based on known deficit to look for or expect. The objective of this study was to assess the compliance of systematic reviews and meta-analysis in the management of brain AVM...
May 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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