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Arteriovenous Malformations

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https://www.readbyqxmd.com/read/28525927/differences-in-functional-outcome-across-subtypes-with-spetzler-martin-grade-ii-arteriovenous-malformations
#1
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
No abstract text is available yet for this article.
June 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28525635/multimodality-treatment-of-a-temporal-grade-ii-arteriovenous-malformation-operative-video
#2
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/28524790/cognard-type-v-intracranial-dural-arteriovenous-fistula-presenting-in-a-pediatric-patient-with-rapid-progressive-myelopathy
#3
Walter J Jermakowicz, Alexander G Weil, Artyom Vlasenko, Sanjiv Bhatia, Toba N Niazi
Cognard Type V dural arteriovenous fistulas (dAVFs) are a unique type of cranial vascular malformation characterized by congestion of the perimedullary venous system that may lead to devastating spinal cord pathology if left untreated. The authors present the first known case of a pediatric patient diagnosed with a Type V dAVF. A 14-year-old girl presented with a 3-week history of slowly progressive unilateral leg weakness that quickly progressed to bilateral leg paralysis, sphincter dysfunction, and complete sensory loss the day of her presentation...
May 19, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28524787/cerebral-hemorrhage-in-monozygotic-twins-with-hereditary-hemorrhagic-telangiectasia-case-report-and-hemorrhagic-risk-evaluation
#4
Abbas Rattani, Michael C Dewan, Vickie Hannig, Robert P Naftel, John C Wellons, Lori C Jordan
The authors present a case of monozygotic twins with hereditary hemorrhagic telangiectasia (HHT) who experienced cerebral arteriovenous malformation (AVM) hemorrhage at a very young age. The clinical variables influencing HHT-related AVM rupture are discussed, and questions surrounding the timing of screening and intervention are explored. This is only the second known case of monozygotic HHT twins published in the medical literature, and the youngest pair of first-degree relatives to experience AVM-related cerebral hemorrhage...
May 19, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28523345/endovenous-laser-ablation-therapy-in-children-applications-and-outcomes
#5
Premal A Patel, Alex M Barnacle, Sam Stuart, Joao G Amaral, Philip R John
BACKGROUND: Endovenous laser ablation is well recognized as the first-line treatment for superficial venous reflux with varicose veins in adults. It is not widely reported and is not an established practice in pediatric patients. OBJECTIVE: To illustrate a variety of pediatric venous conditions in which endovenous laser ablation can be utilized and to demonstrate its feasibility and safety in children. MATERIALS AND METHODS: We conducted a retrospective review of endovenous laser ablation procedures performed between January 2007 and July 2014 at two large pediatric institutions...
May 18, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28522939/identification-of-protein-targets-in-cerebral-endothelial-cells-for-brain-arteriovenous-malformation-avms-molecular-therapies
#6
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
#7
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
#8
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/28521439/arteriovenous-malformation-and-thyroid-metastasis-from-underlying-renal-cell-carcinoma-an-unusual-presentation-of-malignancy-a-case-report
#9
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/28521353/intraoperative-angiography-for-arteriovenous-malformation-resection-in-the-prone-and-lateral-positions-using-upper-extremity-arterial-access
#10
Erez Nossek, David J Chalif, Razvan Buciuc, Eric J Gandras, Erich G Anderer, Sal Insigna, Amir R Dehdashti, Avi Setton
BACKGROUND: Intraoperative angiography is routinely utilized for aneurysms and arteriovenous malformations (AVMs) to verify complete occlusion and resection. Surgery for spinal and posterior fossa neurovascular lesions is usually performed in prone position. Intraoperative angiography in the prone position is challenging and there is no standardized protocol for this procedure. OBJECTIVE: To describe our experience with intraoperative angiography in the prone and lateral positions, using upper extremity arterial access...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28521028/contralateral-anterior-interhemispheric-approach-to-medial-frontal-arteriovenous-malformation-3-dimensional-operative-video
#11
Arnau Benet, Dylan Griswold, Halima Tabani, Roberto Rodriguez Rubio, Sonia Yousef, Ali Tayebi Meybodi, Michael T Lawton
No abstract text is available yet for this article.
May 17, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28520943/risk-assessment-of-hemorrhage-of-posterior-inferior-cerebellar-artery-aneurysms-in-posterior-fossa-arteriovenous-malformations
#12
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
#13
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
#14
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
#15
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/28507659/diagnosis-of-arteriovenous-malformation-in-the-finger
#16
Ali Sawani, Katherine Huber, Sherma Zibadi, Wyatt G Payne
No abstract text is available yet for this article.
2017: Eplasty
https://www.readbyqxmd.com/read/28505625/metal-artifact-reduction-on-chest-computed-tomography-examinations-comparison-of-the-iterative-metallic-artefact-reduction-algorithm-and-the-monoenergetic-approach
#17
Julien Pagniez, Louise Legrand, Suonita Khung, Jean-Baptiste Faivre, Alain Duhamel, Andreas Krauss, Jacques Remy, Martine Remy-Jardin
OBJECTIVE: The aim of the study was to compare iterative metallic artefact reduction (iMAR) and monochromatic imaging on metal artifact reduction. MATERIALS AND METHODS: Follow-up of 29 occluded pulmonary arteriovenous malformations was obtained with dual-energy computed tomography with reconstruction of averaged images using filtered back projection (group 1), iMAR (group 2), and creation of high-energy monoenergetic images (group 3). Two types of coils had been used: (a) nickel only (group A, n = 18) and (b) nickel and platinum (group B, n = 11)...
May 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28503284/arteriovenous-malformations-of-the-colon-a-report-of-two-cases-and-review-of-the-literature
#18
Ghodratollah Maddah, Abbas Abdollahi, Omid Rouhbakhshfar, Shirin Taraz Jamshidi, Masoumeh Hassanpour
BACKGROUND: Arteriovenous malformations are one of the most common vascular disorders of the colon. Vascular disorders present as painless, high-volume rectal bleeding. CASE PRESENTATION: This study elucidates two rare cases of vascular disorders that are diagnosed as angiodysplasia of the left colon and cavernous hemangioma of the colon and rectum. The chief complaint in two patients was rectorrhagia. The patients who were diagnosed of ulcerative colitis were treated with sulfadiazine and prednisone...
2017: Caspian Journal of Internal Medicine
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
#19
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/28502190/two-rare-risk-factors-for-post-partum-haemorrhage-a-case-report-of-a-carrier-of-severe-haemophilia-a-with-a-uterine-arteriovenous-malformation
#20
Gemma L Malin, Gillian Swallow, Jane Rutherford
No abstract text is available yet for this article.
May 14, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
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