Read by QxMD icon Read

Brain AVM

Furkan Diren, Serra Sencer, Tayfun Hakan
Objective: Arteriovenous malformation (AVM) is the most common form of intracranial vascular malformations in adults. Intracranial pediatric AVMs are rare. AVM located in the vicinity of the brain stem in children are even more rare. Case report: This study reports a rare case of acute obstructive hydrocephalus following aqueductal stenosis caused by an unruptured grade IV perimesencephalic arteriovenous malformation. An 11-year-old boy admitted to the hospital with progressive headache, nausea and vomiting throughout a month...
2018: Open Neuroimaging Journal
Michael Kerin Morgan, Mathew Guilfoyle, Ramez Kirollos, Gillian Z Heller
BACKGROUND: Avoiding the risk of postoperative hemorrhage after brain arteriovenous malformation (AVM) resection involves aggressive blood pressure control. Remodeling of the feeding arterial system is critical in reducing this risk. OBJECTIVE: To investigate factors predicting time to return to normal on digital subtraction angiography (DSA) after AVM resection. METHODS: For AVM in which the largest feeding artery (FA) on DSA was in the anterior circulation, the preoperative and postoperative diameter of the FA were compared with the diameter of the internal carotid artery (IC) immediately proximal to the posterior communicating artery...
March 12, 2018: Neurosurgery
David Yuen Chung Chan, Danny Tat Ming Chan, Cannon Xian Lun Zhu, Patricia Kwok Yee Kan, Amelia Yikjin Ng, Yi-Pin Sonia Hsieh, Jill Abrigo, Wai Sang Poon, George Kwok Chu Wong
Treatment of arteriovenous malformations (AVM) located at the eloquent area has been a challenge. Awake brain mapping allows identification of a non-eloquent gyrus for intervention and can potentially facilitate resection with preservation of functions. An alternative treatment option is stereotactic radiosurgery (SRS). The objective of this study was to perform a qualitative comparison of the treatment outcome of awake AVM excision versus SRS. We conducted a 13-year retrospective review of AVM excision under awake craniotomy performed at Prince of Wales Hospital, Hong Kong, from 2003 to 2016...
March 9, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Elias Oulasvirta, Päivi Koroknay-Pál, Ahmad Hafez, Ahmed Abou Elseoud, Hanna Lehto, Aki Laakso
BACKGROUND: Population-based long-term data on pediatric patients with cerebral arteriovenous malformations (AVMs) are limited. OBJECTIVE: To clarify the characteristics and long-term outcome of pediatric patients with AVM. METHODS: A retrospective analysis was performed on 805 consecutive brain AVM patients admitted to a single center between 1942 and 2014. The patients were defined as children if they were under 18 yr at admission. Children were compared to an adult cohort...
March 5, 2018: Neurosurgery
Jing Yu, Ning Xu, Ying Zhao, Jinlu Yu
The anterior choroidal artery (AChA) is a critical artery in brain physiology and function. The AChA is involved in many diseases, including aneurysm, brain infarct, Moyamoya disease (MMD), brain tumor, arteriovenous malformation (AVM), etc. The AChA is vulnerable to damage during the treatment of these diseases and is thus a very important vessel. However, a comprehensive systematic review of the importance of the AChA is currently lacking. In this study, we used the PUBMED database to perform a literature review of the AChA to increase our understanding of its role in neurophysiology...
2018: International Journal of Medical Sciences
Biljana Milatović, Jovica Saponjski, Haris Huseinagić, Mirza Moranjkić, Svetlana Milošević Medenica, Ivan Marinković, Igor Nikolić, Slobodan Marinkovic
BACKGROUND: Identification and anatomic features of the feeding arteries of the arteriovenous malformations (AVMs) is very important due to neurologic, radiologic, and surgical reasons. MATERIALS AND METHODS: Seventy-seven patients with AVMs were examined by using a digital subtraction angiographic (DSA) and computerized tomographic (CT) examination, including 3D reconstruction of the brain vessels. In addition, the arteries of 4 human brain stems and 8 cerebral hemispheres were microdissected...
March 3, 2018: Folia Morphologica (Warsz)
Nicholas T Gamboa, Evan J Joyce, Ilyas Eli, Min S Park, Philipp Taussky, Richard H Schmidt, Jamie McDonald, Kevin J Whitehead, M Yashar S Kalani
Hereditary hemorrhagic telangiectasia (HHT) is characterized by recurrent spontaneous epistaxis, mucocutaneous telangiectases, and multisystem arteriovenous malformations (AVMs). Brain AVMs typically present at birth and are identified in approximately 10-20% of patients with HHT. A retrospective review was undertaken of all HHT patients with known single or multiple brain AVMs treated at our institution. Thirty-nine patients with brain AVM(s) were diagnosed with HHT. Most patients presented with at least one Curaçao criterion...
February 23, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Michael K Morgan, Gillian Z Heller
BACKGROUND: There is uncertainty of the benefit of preoperative embolization for Spetzler- Ponce Class (SPC) B and C arteriovenous malformations of the brain (bAVM). We examined whether or not preoperative embolization reduces the risk of permanent neurological deficits in SPC B and C bAVM surgery. METHODS: A prospective bAVM database (between1989 and 2015) was analyzed by regression for factors associated with a new permanent neurological deficit arising as a consequence of surgery or preoperative embolization with a modified Rankin Scale (mRS) score >1 at 12 months after surgery (adverse outcome)...
February 23, 2018: Journal of Neurosurgical Sciences
Steven Kroon, Repke J Snijder, Marie E Faughnan, Hans-Jurgen Mager
PURPOSE OF REVIEW: Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant inherited disease characterized by telangiectasia and arteriovenous malformations (AVMs). To date, five genetic types of HHT and one combined juvenile polyposis syndrome and HHT are known. Clinical and genetic screening of patients suspected with HHT is recommended to confirm the diagnosis and to prevent complications associated with HHT. The aim of this article is to give an overview of the evidence and to formulate a recommendation for clinicians concerning screening for HHT...
February 20, 2018: Current Opinion in Pulmonary Medicine
Xianli Lv, Guihuai Wang
Objective A small number of patients has been reported to develop a completely new or de novo arteriovenous malformation (AVM) after brain surgery, haemorrhage, head trauma or ischaemic stroke. The natural history of these lesions is unknown. In this review, both ruptured and unruptured de novo AVMs and their treatments were reviewed. Methods Published literature in the PubMed database citing 'de novo cerebral arteriovenous malformation' was reviewed. Additional studies were identified through reference searches in each reviewed article...
January 1, 2018: Neuroradiology Journal
Hari S Raman, Lakshmi Santanam, Ananth K Vellimana, Robert E Drzymala, Christina I Tsien, Gregory J Zipfel
BACKGROUND AND IMPORTANCE: Gamma Knife radiosurgery is an established technique for non-urgent treatment of various intracranial pathologies. Intra-procedural dislodgement of the stereotactic frame is an uncommon occurrence that could lead to abortion of ongoing treatment and necessitate more invasive treatment strategies. CLINICAL PRESENTATION: In this case report, we describe a novel method for resumption of Gamma Knife treatment after an unplanned intra-procedural interruption...
February 17, 2018: Acta Neurochirurgica
Mary Simons, Michael K Morgan, Andrew S Davidson
INTRODUCTION: There is uncertainty as to the best management of arteriovenous malformations of the brain (bAVM). However, the Spetzler-Martin grade (SMG) has been validated as an effective determinant of surgical risks. We performed a systematic review for the best evidence regarding the management of bAVM for series that incorporate an analysis based upon SMG. EVIDENCE ACQUISITION: Medline, Embase, Scopus and Cochrane databases were searched for series between January 2000 and January 2018, with a minimum of 100 cases and that incorporated SMG stratification...
February 13, 2018: Journal of Neurosurgical Sciences
Yi-Bin Fang, Jun-Soo Byun, Jian-Min Liu, Timo Krings, Vitor M Pereira, Waleed Brinjikji
INTRODUCTION: The safety and efficacy of transvenous embolization of brain arteriovenous malformations (AVM) remains relatively poorly understood. We performed a systematic review of the literature to determine outcomes of transvenous embolization of brain AVMs. EVIDENCE ACQUISITION: Data Sources include Ovid MEDLINE, Ovid EMBASE and the Web of Science. All case series with ≥4 patients receiving transvenous embolization of brain AVMs published through September 2017 were included...
February 13, 2018: Journal of Neurosurgical Sciences
Chan Hee Koh, Savva Pronin, Mark Hughes
OBJECTIVES: Damage to critical brain regions causes deficits in important neurological functions. Chondroitinase ABC (ChABC) has been shown to promote neuroplasticity and may ameliorate neurological deficits caused by disease or trauma. This systematic review identifies and evaluates preclinical studies of ChABC as a treatment for acute brain injury. METHODS: Four databases were searched for studies relating to ChABC and brain or brain injuries. Controlled studies in mammals with acute brain injuries treated with ChABC were included in meta-analyses of neurobehavioural outcomes...
February 13, 2018: Brain Injury: [BI]
Mohana Rao Patibandla, Dale Ding, Hideyuki Kano, Robert M Starke, John Y K Lee, David Mathieu, Jamie Whitesell, John T Pierce, 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 The role of and technique for stereotactic radiosurgery (SRS) in the management of arteriovenous malformations (AVMs) have evolved over the past four decades. The aim of this multicenter, retrospective cohort study was to compare the SRS outcomes of AVMs treated during different time periods. METHODS The authors selected patients with AVMs who underwent single-session SRS at 8 different centers from 1988 to 2014 with follow-up ≥ 6 months. The SRS eras were categorized as early (1988-2000) or modern (2001-2014)...
February 2, 2018: Journal of Neurosurgery
C Q Li, A Hsiao, J Hattangadi-Gluth, J Handwerker, N Farid
Brain AVMs treated with stereotactic radiosurgery typically demonstrate a minimum latency period of 1-3 years between treatment and nidus obliteration. Assessment of treatment response is usually limited to evaluation of AVM nidus structural changes using conventional MR imaging and MRA techniques. This report describes the use of 4D Flow MRI to also measure radiation-induced hemodynamic changes in a Spetzler-Martin grade III AVM, which were detectable as early as 6 months after treatment.
January 25, 2018: AJNR. American Journal of Neuroradiology
Sebastian Ille, Thomas Picht, Ehab Shiban, Bernhard Meyer, Peter Vajkoczy, Sandro M Krieg
BACKGROUND: The treatment of brain arteriovenous malformations (BAVMs) is still contrarily discussed. Despite the debatable results of the ARUBA trial, most BAVMs still require treatment depending on the Spetzler-Martin (SM) grading. Since size is measurable and venous drainage is visible, the determination of eloquence is comparably crucial but not fully objective. The present bicentric cohort study aims to examine the influence of preoperative navigated transcranial magnetic stimulation (nTMS) motor and language mapping data on decision-making for or against surgical treatment of BAVMs...
March 2018: Acta Neurochirurgica
Marijke De Saint-Hubert, Marija Majer, Hrvoje Hršak, Zdravko Heinrich, Željka Kneževic, Saveta Miljanic, Paulina Porwol, Liliana Stolarczyk, Filip Vanhavere, Roger M Harrison
The purpose of this study was to measure out-of-field organ doses in two anthropomorphic child phantoms for the treatment of large brain arteriovenous malformations (AVMs) using hypofractionated gamma knife (GK) radiosurgery and to compare these with an alternative treatment using intensity-modulated radiation therapy (IMRT). Target volume was identical in size and shape in all cases. Radiophotoluminescent (RPL), thermoluminescent (TL) and optically stimulated luminescent (OSL) dosimeters were used for out-of-field dosimetry during GK treatment and a good agreement within 1-2% between results was shown...
January 17, 2018: Radiation Protection Dosimetry
Mengqi Dong, Guangzhong Chen, Kun Qin, Xiaowen Ding, Dong Zhou, Chao Peng, Shaojian Zeng, Xianming Deng
PURPOSE: Rapid prototyping technology is used to fabricate three-dimensional (3D) brain arteriovenous malformation (AVM) models and facilitate presurgical patient communication and medical education for young surgeons. METHODS: Two intracranial AVM cases were selected for this study. Using 3D CT angiography or 3D rotational angiography images, the brain AVM models were reconstructed on personal computer and the rapid prototyping process was completed using a 3D printer...
January 15, 2018: British Journal of Neurosurgery
Ethan A Winkler, Harjus Birk, Jan-Karl Burkhardt, Xiaolin Chen, John K Yue, Diana Guo, W Caleb Rutledge, George F Lasker, Carlene Partow, Tarik Tihan, Edward F Chang, Hua Su, Helen Kim, Brian P Walcott, Michael T Lawton
OBJECTIVE Brain arteriovenous malformations (bAVMs) are rupture-prone tangles of blood vessels with direct shunting of blood flow between arterial and venous circulations. The molecular and/or cellular mechanisms contributing to bAVM pathogenesis and/or destabilization in sporadic lesions have remained elusive. Initial insights into AVM formation have been gained through models of genetic AVM syndromes. And while many studies have focused on endothelial cells, the contributions of other vascular cell types have yet to be systematically studied...
January 5, 2018: Journal of Neurosurgery
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"