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https://www.readbyqxmd.com/read/28525635/multimodality-treatment-of-a-temporal-grade-ii-arteriovenous-malformation-operative-video
#1
Gary Rajah, Arianne Boylan, Mathew Schreckinger, Leonardo Rangel-Castilla
No abstract text is available yet for this article.
May 19, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28522939/identification-of-protein-targets-in-cerebral-endothelial-cells-for-brain-arteriovenous-malformation-avms-molecular-therapies
#2
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/28522669/liquid-embolic-agents-for-endovascular-embolization-evaluation-of-an-established-onyx-and-a-novel-phil-embolic-agent-in-an-in-vitro-avm-model
#3
D F Vollherbst, C M Sommer, C Ulfert, J Pfaff, M Bendszus, M A Möhlenbruch
BACKGROUND AND PURPOSE: Embolization plays a key role in the treatment of arteriovenous malformations. The aim of this study was to evaluate an established (Onyx) and a novel (precipitating hydrophobic injectable liquid [PHIL]) liquid embolic agent in an in vitro AVM model. MATERIALS AND METHODS: An AVM model was integrated into a circuit system. The artificial nidus (subdivided into 28 honeycomb-like sections) was embolized with Onyx 18 (group Onyx; n = 8) or PHIL 25 (group PHIL; n = 8) with different pause times between the injections (30 and 60 seconds, n = 4 per study group) by using a 1...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522380/predictive-factors-of-postoperative-seizure-for-pediatric-patients-with-unruptured-arteriovenous-malformations-avms
#4
Haibo Yang, Zhenghai Deng, Wuyang Yang, Kai Liu, Hongxin Yao, Xianzeng Tong, Jun Wu, Yuanli Zhao, Yong Cao, Shuo Wang
BACKGROUND: Seizure is the second-most common presentation in AVM patients and superimposes significant burden on pediatric patients. Post-operative seizure risk in unruptured AVMs is under-reported in the pediatric AVM literature. We aim to characterize and identify predictive factors for post-operative seizures in this study. METHODS: We performed a retrospective review of all surgically treated, unruptured pediatric AVM patients at our institution from 2001-2014...
May 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28520943/risk-assessment-of-hemorrhage-of-posterior-inferior-cerebellar-artery-aneurysms-in-posterior-fossa-arteriovenous-malformations
#5
Alice L Hung, Wuyang Yang, Maria Braileanu, Tomas Garzon-Muvdi, Justin M Caplan, Geoffrey P Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
BACKGROUND: Posterior fossa arteriovenous malformations (AVMs) are associated with increased risk of rupture and severe consequences from such rupture. The hemorrhagic risk of prenidal aneurysms (anr) on the posterior inferior cerebellar artery (PICA) may exceed that of the AVM in posterior fossa AVMs fed by PICA (PICA-AVM). OBJECTIVE: To characterize the relative risks of aneurysm and AVM hemorrhage in patients with posterior fossa AVMs. METHODS: We retrospectively reviewed patients diagnosed with AVM...
May 18, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28515372/spinal-arteriovenous-shunts-angioarchitecture-and-historical-changes-in-classification
#6
Keisuke Takai
The purposes of this study were to review historical changes in the classification of spinal arteriovenous (AV) shunts and to propose a practical classification system. The associated literature regarding the classification of spinal AV shunts was reviewed in the angiography era between 1967 and 2015. The classification systems of spinal AV shunts and a proposed classification system were presented with neuroradiological imaging and medical illustrations. There have been seven major classification systems based on the evolution of diagnostic methods as well as treatments for spinal AV shunts: the first description of spinal AV shunts diagnosed and classified using spinal angiography in 1971; the second classification based on a case report of intradural direct perimedullary arteriovenous fistulas (AVFs) treated by microsurgery in 1987; the third classification based on a case series of intradural perimedullary AVFs treated by endovascular interventions in 1993; the fourth and fifth classification systems based on a case series of spinal AVFs and arteriovenous malformations (AVMs) treated by microsurgery or endovascular interventions in 2002; the sixth classification based on a case series of cranio-spinal dural AV shunts in 2009; and the seventh classification based on a case series of extradural AVFs treated by microsurgery and endovascular interventions in 2011...
May 18, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28512050/assessing-the-role-of-preoperative-embolization-in-the-surgical-management-of-cerebral-arteriovenous-malformations
#7
Andrew S Luksik, Jody Law, Wuyang Yang, Tomas Garzon-Muvdi, Justin M Caplan, Geoffrey Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
BACKGROUND: Preoperative embolization is established as an advantageous adjunct in multimodality treatment of cerebral arteriovenous malformations(AVMs). However, the benefit of preoperative embolization in AVMs with favorable surgical risk profile is debatable, as it has yet to be supported by evidence in comparative studies. In this study, we assessed outcome of surgically-treated patients in a comparative setting. METHODS: Our institutional AVM database of retrospectively and prospectively collected data between 1990-2015 was reviewed...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28507836/microsurgical-removal-of-microcatheter-in-the-middle-cerebral-artery-during-resection-of-an-arteriovenous-malformation-resection
#8
Pejma Shazadeh Safavi, Sohum Desai, Daniel Branch, Juan R Ortega-Barnett
Surgical resection is the current standard of therapy for the treatment of arteriovenous malformation (AVM). Endovascular embolization is commonly used as an adjunct prior to surgical resection because it is believed to reduce the risk of intraoperative bleeding. Embolization has been associated with other complications including visual deficits, vessel perforation, and catheter adhesion. Catheter adhesion in which retained segments are contained within the embolization cast are not necessarily cause for concern, but retention of larger portions may confer an increased risk of thrombus formation...
April 13, 2017: Curēus
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
#9
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
#10
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/28495425/volume-staged-stereotactic-radiosurgery-for-large-intracranial-arteriovenous-malformations
#11
Adeel Ilyas, Dale Ding, H Robert Hixson, Zhiyuan Xu, Robert M Starke, Jason P Sheehan
Stereotactic radiosurgery (SRS) is an effective treatment option for intracranial arteriovenous malformations (AVM). However, the treatment of large AVMs (nidus volume ≥12cm(3)) with single-session SRS alone yields generally poor outcomes. Volume-staged SRS (VS-SRS) is a therapeutic strategy for large AVMs which seeks to avoid the disadvantages of single-session SRS, but reports regarding its efficacy remain limited. The aim of this retrospective cohort study is to assess the outcomes of VS-SRS for large AVMs...
May 8, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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
#12
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/28484532/progression-in-size-of-an-arterio-venous-malformation
#13
Abhidha Shah, Neeraj Patni, Raghvendra Ramdasi, Atul Goel
We report a case of a young girl who was admitted with history of sudden onset left hemiplegia, when she was 5 years old. Investigations revealed no vascular malformation or abnormality. On conservative treatment, she progressively improved and had residual hemiparesis. She continued to have intermittent episodes of generalized and focal convulsions. For persistent convulsions, she was investigated again with MRI and angiography after 5 years of first presentation. Investigations at this time revealed a large arteriovenous malformation in the left posterior frontal region...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484529/secondary-communicating-hydrocephalus-management-by-implantation-of-external-ventricular-shunt-and-minimal-gradual-increase-of-cerebrospinal-fluid-pressure
#14
Keyvan Mostofi, Madjid Samii
BACKGROUND: This paper presents a new management strategy explaining the process used by implantation of external ventricular drainage (EVD) and very gradual increase of intracranial pressure for treatment of acute hydrocephalus. During the last 30 years' experience in professional practice, the senior author (M.S.) discovered that there are some options of regulations between cerebral spinal fluid (CSF) production and resorption. This theory shows that minimal continuous increase of the CSF pressure as long as the patient general neurological condition is unchanged and appears as normal can lead to definitive treatment of hydrocephalus without needing to set a shunt...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484523/radiosurgery-in-treatment-of-cerebral-arteriovenous-malformation-mid-term-results-of-388-cases-from-a-single-center
#15
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/28484196/a-case-of-an-intractable-duodenal-ulcer-associated-with-a-pancreatic-arteriovenous-malformation
#16
Shotaro Inoue, Tetsuya Ueo, Hirotoshi Yonemasu, Tetsuya Ishida, Masahide Fukuda, Kazumi Togo, Yuka Yanai, Hideyasu Nagamatsu, Ryoichi Narita, Kazunari Murakami
A 62-year-old man with epigastralgia was referred to our hospital for the evaluation of an intractable duodenal ulcer, which did not improve following proton pump inhibitor treatment. An upper gastrointestinal endoscopy revealed that the base of the ulcer was gray-white in color with conspicuous fibrosis tissue, unlike the appearance of common ulcers. A contrast-enhanced abdominal CT scan and angiography revealed tortuous and dilated vascular structures in the pancreatic head. This was diagnosed as a pancreatic arteriovenous malformation...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28480115/-foreign-accent-syndrome-after-aneurysmal-disappearance-due-to-avm-treatment
#17
Fidel Sosa, Jorge Bustamante, Facundo Rodríguez, Romina Argañaraz, Pablo Rubino, Jorge Lambre
INTRODUCTION: Aneurysms associated with arteriovenous malformations (AVM) are vascular lesions are usually found in up to 15% of cases, increasing the overall risk of bleeding. The behavior against associated aneurysms is dichotomous while there are reports of disappearance of the same after the removal of the AVM; other items emphasize early treatment. Foreign accent syndrome is a rare neurological disorder in which the patient speaks his mother language as would a foreigner and sounds as foreign "accent" to native listeners...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28475807/impact-of-weekend-presentation-on-short-term-outcomes-and-choice-of-clipping-vs-coiling-in-subarachnoid-hemorrhage
#18
Aditya S Pandey, D Andrew Wilkinson, Joseph J Gemmete, Neeraj Chaudhary, B Gregory Thompson, James F Burke
BACKGROUND: Presentation on a weekend is commonly associated with higher mortality and a decreased likelihood of receiving invasive procedures. OBJECTIVE: To determine whether weekend presentation influences mortality, discharge destination, or type of treatment received (clip vs coil) in subarachnoid hemorrhage (SAH). METHODS: We performed a serial cross-sectional retrospective study using the Nationwide Inpatient Sample. All adult discharges with a primary diagnosis of SAH (ICD-9-CM 435) from 2005 to 2010 were included, and records with trauma or arteriovenous malformation were excluded...
May 5, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28475722/comparison-of-hemorrhagic-risk-in-intracranial-arteriovenous-malformations-between-conservative-management-and-embolization-as-the-single-treatment-modality
#19
Wuyang Yang, Jose L Porras, Risheng Xu, Maria Braileanu, Syed Khalid, Alice L Hung, Justin M Caplan, Tomas Garzon-Muvdi, Xiaoming Rong, Geoffrey P Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
BACKGROUND: Embolization has been discussed as a feasible single modality treatment for intracranial arteriovenous malformations (AVMs). OBJECTIVE: To compare hemorrhagic risk between embolization and conservative management in a multivariate survival analysis. METHODS: We retrospectively reviewed records of patients with intracranial AVMs evaluated at our institution from 1990 to 2013. We included patients recommended to undergo embolization without other treatment modalities and patients managed conservatively...
May 5, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28473356/a-case-of-pulsatile-scalp-swelling-in-a-child
#20
Daisy Khera, Pushpinder Singh Khera, Arvind Sinha, Neeraj Mehta
Arteriovenous fistulas (AVF) are an entity most commonly seen in the head and neck region. An AVF is a direct connection between the arterial feeders and the draining veins without intervening capillary beds (unlike an arteriovenous malformation in which a nidus intervenes between the arteries and veins). We describe a case of traumatic AVF in a child aged 9 years, who presented with a pulsatile scalp swelling following blunt trauma to the head. It turned out to be an AVF between the superficial temporal artery and vein...
May 3, 2017: BMJ Case Reports
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