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Brain AVM

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https://www.readbyqxmd.com/read/28548596/cyst-formation-after-stereotactic-radiosurgery-for-brain-arteriovenous-malformations-a-systematic-review
#1
Adeel Ilyas, Ching-Jen Chen, Dale Ding, Panagiotis Mastorakos, Davis G Taylor, I Jonathan Pomeraniec, Cheng-Chia Lee, Jason Sheehan
OBJECTIVE Cyst formation can occasionally occur after stereotactic radiosurgery (SRS) for brain arteriovenous malformations (AVMs). Given the limited data regarding post-SRS cyst formation in patients with AVM, the time course, natural history, and management of this delayed complication are poorly defined. The aim of this systematic review was to determine the incidence, time course, and optimal management of cyst formation after SRS for AVMs. METHODS A literature review was performed using PubMed to identify studies reporting cyst formation in AVM patients treated with SRS...
May 26, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28526901/to-treat-or-not-to-treat-that-is-the-question-critical-review-of-brain-avm-surgery-surgical-results-and-natural-history-in-2017-by-michael-morgan-et-al
#2
EDITORIAL
Karl Schaller, Hans-Jakob Steiger
No abstract text is available yet for this article.
May 19, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28523423/to-treat-or-not-to-treat-brain-avms-that-s-still-the-question
#3
EDITORIAL
Torstein R Meling
No abstract text is available yet for this article.
May 18, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28522939/identification-of-protein-targets-in-cerebral-endothelial-cells-for-brain-arteriovenous-malformation-avms-molecular-therapies
#4
Margaret Simonian, Rachel R Ogorzalek Loo, Nalaka Rannulu, Joseph A Loo, Mark P Molloy, Marcus A Stoodley
BACKGROUND: To develop a new molecular targeted treatment for brain (AVMs), identification of membrane proteins that are localised on the AVM endothelium is crucial. Current treatment methods are surgery and radiosurgery. However, complete occlusion post radiosurgery are achieved within 3 years, while patient remain at risk of haemorrhage. This study aims to identify potential protein targets in AVM endothelial cells that discriminate these vessels from normal vessels; these proteins targets will be investigated for the molecular therapy of brain AVMs to promote rapid thrombosis after radiosurgery...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28521439/arteriovenous-malformation-and-thyroid-metastasis-from-underlying-renal-cell-carcinoma-an-unusual-presentation-of-malignancy-a-case-report
#5
H J Albandar, E S Roberto, J R H See, J H Sabiers
Renal Clear Cell Carcinoma (RCC) comprises over 80% of renal malignancies in adults. Thyroid gland metastasis is rare in RCC. Few studies have described cases of RCC mistaken for benign arteriovenous malformation (AVM). To the best of our knowledge, an AVM arising from underlying RCC metastasis to the brain has not yet been reported. The current study presents a case of RCC metastasis to the thyroid gland, with an AVM identified to be a result of metastatic involvement in the brain. A 45-year-old African-American female presented with left-sided weakness, slurred speech, facial droop and seizure...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28502562/grade-1-spetzler-and-martin-cerebral-ruptured-arteriovenous-malformations-treated-by-microsurgery-poor-functional-outcome-is-related-to-injury-from-haemorrhage
#6
R Aboukaïs, M Quidet, M Baroncini, P Bourgeois, X Leclerc, M Vinchon, J-P Lejeune
INTRODUCTION: Ruptured arteriovenous malformations (rAVM) are life-threatening diseases. OBJECTIVE: To evaluate the outcome of patients with grade 1 SPM rAVM after microsurgical treatment. MATERIALS AND METHOD: We retrospectively included 64 consecutive operated patients with a grade 1 SPM rAVM in our institution between 2002 and 2012. Complications related to the surgical procedure were recorded. All patients were re-evaluated 3months after treatment using the modified Rankin Scale score (mRS)...
May 11, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28498057/stereotactic-radiosurgery-alone-or-combined-with-embolization-for-brain-arteriovenous-malformations-a-systematic-review-and-meta-analysis
#7
Dylan Russell, Travis Peck, Dale Ding, Ching-Jen Chen, Davis G Taylor, Robert M Starke, Cheng-Chia Lee, Jason P Sheehan
OBJECTIVE Embolization of brain arteriovenous malformations (AVMs) prior to stereotactic radiosurgery (SRS) has been reported to negatively affect obliteration rates. The goal of this systematic review and meta-analysis was to compare the outcomes of AVMs treated with embolization plus SRS (E+SRS group) and those of AVMs treated with SRS alone (SRS group). METHODS A literature review was performed using PubMed to identify studies with 10 or more AVM patients and obliteration data for both E+SRS and SRS groups...
May 12, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28487334/hemorrhage-risk-of-brain-arteriovenous-malformations-during-pregnancy-and-puerperium-in-a-north-american-cohort
#8
Jose L Porras, Wuyang Yang, Eunice Philadelphia, Jody Law, Tomas Garzon-Muvdi, Justin M Caplan, Geoffrey P Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
BACKGROUND AND PURPOSE: Conclusions reached in existing literature about risk of arteriovenous malformation (AVM) hemorrhage during pregnancy are controversial. This study compares the risk of hemorrhage in pregnant and nonpregnant female patients with AVM in a North American cohort. METHODS: We retrospectively reviewed female patients with AVM evaluated from 1990 to 2015. Exposure period for pregnancy and puerperium was calculated as 40 and 6 weeks, respectively, for each full-term pregnancy and 6 weeks for each abortion...
May 9, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28486221/evaluation-of-clinical-application-and-dosimetric-comparison-of-treatment-plans-of-gamma-knife-and-cyberknife-in-treating-arteriovenous-malformations
#9
Chun-Yuan Kuo, Yi-Chieh Tsai, An-Cheng Shiau, Hao-Wen Cheng, Hsiao-Wei Yu, Yu-Kai Su, Jo-Ting Tsai
PURPOSE: To analyze and compare the characteristics of dose distributions for Leksell Gamma Knife Perfexion (LGK-PFX) and CyberKnife (CK) in treating arteriovenous malformations (AVMs). SUBJECTS AND METHODS: Twenty-four patients with AVMs who received CK radiosurgery at a prescribed dose (PD) of 16-25 Gy in a single fraction were selected. A LGK-PFX treatment plan with the same PD was designed for each patient. Dosimetric values for both systems were compared with respect to the conformity index (CI); selectivity index (SI); gradient index (GI) of 75, 50, and 25% of the PD; heterogeneity index; volume of the brain tissue covered by doses of 10 and 12 Gy; maximum dose delivered to the brainstem; and beam-on time...
May 10, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28484523/radiosurgery-in-treatment-of-cerebral-arteriovenous-malformation-mid-term-results-of-388-cases-from-a-single-center
#10
Mohammad Ali Bitaraf, Ramon Katoozpour, Mazyar Azar, Mohsen Nouri, Seyed Abolghasem Mortazavi, Abbas Amirjamshidi
BACKGROUND AND OBJECTIVES: The purpose of this study is to evaluate the outcome and risks of radiosurgery for patients with arteriovenous malformations (AVM) of the brain all treated in a single center in the 3(rd) world with all its limitations. MATERIALS AND METHODS: We performed a retrospective analysis of 388 patients with AVM treated with radiosurgery during an 8-year period. Factors associated with increased chance of AVM obliteration or hemorrhages during the follow-up period were analyzed...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28431024/radiosurgery-for-unruptured-brain-arteriovenous-malformations-an-international-multicenter-retrospective-cohort-study
#11
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...
June 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28424268/favorable-outcome-in-patients-with-intracranial-hemorrhage-due-to-ruptured-brain-avm
#12
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
#13
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
#14
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
#15
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
#16
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...
June 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28377246/awake-surgery-for-brain-vascular-malformations-and-moyamoya-disease
#17
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
#18
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...
May 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
#19
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
#20
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
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