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Arterial venous malformation

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https://www.readbyqxmd.com/read/27911229/c-2-arteriovenous-fistula-presenting-as-a-pathologic-hangman-s-fracture-case-report
#1
Rajeev D Sen, Carolina Gesteira Benjamin, Howard A Riina, Donato Pacione
The authors report on an 81-year-old woman with a pathologic hangman's fracture secondary to a complex arteriovenous fistula (AVF). The patient presented with severe, unremitting neck pain and was found to have fractures bilaterally through the pars interarticularis of C-2 with significant anterior subluxation of C-2 over C-3 along with widening of the left transverse foramen. Due to an abnormally appearing left vertebral artery (VA) on CT angiography, the patient underwent conventional angiography, which revealed a complex AVF stemming from the left VA at the level of C-2 with dilated posterior cervical veins and a large venous varix...
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27884880/first-pass-contrast-enhanced-mra-for-pretherapeutic-diagnosis-of-spinal-epidural-arteriovenous-fistulas-with-intradural-venous-reflux
#2
S Mathur, S P Symons, T J Huynh, P Muthusami, W Montanera, A Bharatha
BACKGROUND AND PURPOSE: Spinal epidural AVFs are rare spinal vascular malformations. When there is associated intradural venous reflux, they may mimic the more common spinal dural AVFs. Correct diagnosis and localization before conventional angiography is beneficial to facilitate treatment. We hypothesize that first-pass contrast-enhanced MRA can diagnose and localize spinal epidural AVFs with intradural venous reflux and distinguish them from other spinal AVFs. MATERIALS AND METHODS: Forty-two consecutive patients with a clinical and/or radiologic suspicion of spinal AVF underwent MR imaging, first-pass contrast-enhanced MRA, and DSA at a single institute (2000-2015)...
November 24, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27847307/the-glue-that-holds-the-situation-together
#3
Kyle J Godfrey, Andrew R Harrison, Bobby S Korn, Don O Kikkawa
A 48-year-old man presented with a longstanding left upper eyelid mass that increased in size when bending forward. The mass was associated with enophthalmos and slowly increased in size with Valsalva maneuver. Magnetic resonance imaging and arteriography demonstrated a vascular malformation without an abnormal arterial component. Because of his increasing pain, the vascular malformation was excised in a multidisciplinary approach involving intraoperative fluoroscopic mapping, cyanoacrylate embolization and surgical excision...
November 12, 2016: Survey of Ophthalmology
https://www.readbyqxmd.com/read/27821474/the-dual-microcatheter-technique-for-transvenous-embolization-of-dural-arteriovenous-fistulae
#4
Isaac Josh Abecassis, John D Nerva, Basavaraj V Ghodke, Laligam N Sekhar, Michael R Levitt, Louis J Kim
BACKGROUND: Dural arteriovenous fistulae (dAVFs) comprise 10-15% of all intracranial arteriovenous malformations. The goal of surgical or endovascular intervention is complete obliteration of the fistulous connection(s). In cases where dAVF venous drainage is separate from normal cortical drainage, transvenous embolization can provide fast and effective fistula obliteration. OBJECTIVE: To describe a new method of efficient transvenous embolization (the 'dual microcatheter technique') for the treatment of dAVFs...
November 7, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27798855/retreatment-of-a-choroidal-vein-of-galen-malformation-with-embolization-42%C3%A2-years-after-open-surgical-treatment-in-the-neonatal-period
#5
Lucas Elijovich, Asim F Choudhri, Adam S Arthur, Paul Klimo, Frederick A Boop, Alejandro Berenstein
In 1976 an infant boy initially presented with a choroidal vein of Galen malformation (cVOGM). Craniotomy and clipping of the anterior cerebral artery and posterior choroidal arteries was performed, which was reported in the literature 40 years ago. The patient remained asymptomatic until age 42 when he re-presented with an isolated intraventricular hemorrhage. Angiography demonstrated cVOGM with venous sinus occlusive disease leading to venous hypertension and subsequent intraventricular hemorrhage. The angiogram also demonstrated a 'pseudo-nidus' composed of multiple arterial-to-arterial anastomoses that had developed as a result of the original surgical treatment...
October 8, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27797413/selective-arterial-spin-labeling-in-conjunction-with-phase-contrast-acquisition-for-the-simultaneous-visualization-of-morphology-flow-direction-and-velocity-of-individual-arteries-in-the-cerebrovascular-system
#6
Thomas Lindner, Naomi Larsen, Olav Jansen, Michael Helle
PURPOSE: In various cerebrovascular diseases the visualization of individual arteries and knowledge about their hemodynamic properties, like flow velocity and direction, can become important for an accurate diagnosis. Magnetic resonance angiography methods are intended to acquire this information, but often a single acquisition is not sufficient to retrieve all of this desired information. METHODS: Using selective arterial spin labeling (ASL) methods, a single artery of interest can be tagged and visualized, whereas quantitative information about hemodynamics can be retrieved using phase-contrast techniques that are often limited regarding their selectivity...
October 31, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27793767/ruptured-distal-posterior-inferior-cerebellar-artery-pica-aneurysms-associated-with-cerebellar-arterial-venous-malformations-avms-a-case-series-and-review-of-the-literature-demonstrating-the-need-for-angiographic-evaluation-and-feasibility-of-endovascular-treatment
#7
David Case, David Kumpe, Luis Cava, Robert Neumann, Andrew White, Christopher Roark, Joshua Seinfeld
OBJECTIVE: The characteristics, diagnosis, and preferred management strategies for distal posterior inferior cerebellar artery (PICA) aneurysms associated with cerebellar arteriovenous malformation (AVMs) are poorly understood. We present a case series with attention to aneurysm angioarchitecture, diagnostic imaging, treatment approaches, and a thorough review of the literature. With this information, we demonstrate a specific anatomical pattern for these aneurysms, an underreported need for conventional digital subtraction angiography (DSA) during evaluation, along with the utility of endovascular treatment with liquid embolic agents...
October 25, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27789620/scalp-congenital-hemangioma-with-associated-high-output-cardiac-failure-in-a-premature-infant-case-report-and-review-of-literature
#8
Sumedh S Shah, Brian M Snelling, Samir Sur, Alexandra R Ramnath, Emmalee S Bandstra, Dileep R Yavagal
INTRODUCTION: Scalp congenital hemangiomas (CHs) are rare vascular malformations among infants; they can be associated with an array of complications, including cardiac and cosmetic issues. Here, we report the endovascular treatment of a premature infant with a suspected large right parietal scalp hemangioma and associated high-output cardiac failure. CASE DESCRIPTION: A two-day-old female premature infant (29 weeks gestational age; 1330 g birth weight) was referred by the neonatologists to our department for consultation and potential treatment of a large right parietal CH causing abrupt hypotension and high-output cardiac failure...
October 27, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27769582/-orbito-palpebral-vascular-pathology
#9
F Heran Dreyfus, O Galatoire, P Koskas, F Lafitte, E Nau, O Bergès
Orbito-palpebral vascular pathology represents 10% of all the diseases of this area. The lesion may be discovered during a brain CT scan or MRI, or because it causes clinical symptoms such as orbital mass, visual or oculomotor alteration, pain, proptosis, or acute bleeding due to a complication of the lesion (hemorrhage, thrombosis). We present these lesions using an anatomical, clinical, imaging and therapeutic approach. We distinguish four different entities. Vascular tumors have common imaging characteristics (hypersignal on T2 sequence, contrast enhancement, abnormal vascularization well depicted with ultrasound and Doppler, and possible bleeding)...
October 18, 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27766428/multiple-cerebral-arterio-venous-malformations-impact-of-multiplicity-and-hemodynamics-on-treatment-strategies
#10
Klaus-Peter Stein, Isabel Wanke, Neriman Oezkan, Yuan Zhu, I Erol Sandalcioglu, Michael Forsting, Ulrich Sure
BACKGROUND: Multiple AVMs are exceptionally rare lesions and only a few larger series have been published, including other vascular pathologies, such as arterio-venous fistulae (AVF) or patients with hereditary syndromes. Our study presents clinical, angiographic, and therapeutic characteristics of patients harboring sporadic multiple AVMs. METHODS: Basic demographic data, vascular architecture, clinical presentation, treatment strategies, and treatment outcome were analyzed retrospectively from patients with cerebral AVMs treated in our department between 1990 and 2015...
October 20, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27760058/time-of-arrival-parametric-maps-and-virtual-bolus-images-derived-from-contrast-enhanced-time-resolved-radial-magnetic-resonance-angiography-improve-the-display-of-brain-arteriovenous-malformation-vascular-anatomy
#11
Tilman Schubert, Yijing Wu, Kevin M Johnson, Oliver Wieben, Jane Maksimovic, Charles Mistretta, Patrick Turski
OBJECTIVES: Time-of-arrival (TOA) maps can be derived from high-resolution 4-dimensional (4D) contrast-enhanced magnetic resonance angiography (MRA) data sets to provide a quantitative description of contrast material arrival time in each voxel. This information can further be processed to create a compressed time evolution curve that virtually shortens the contrast bolus (virtual bolus [VB]). The purpose of this project was to determine whether TOA-enhanced 4D MRA and/or VB imaging improve the display of contrast kinetics in patients with vascular disease...
November 2016: Investigative Radiology
https://www.readbyqxmd.com/read/27702926/retreatment-of-a-choroidal-vein-of-galen-malformation-with-embolization-42%C3%A2-years-after-open-surgical-treatment-in-the-neonatal-period
#12
Lucas Elijovich, Asim F Choudhri, Adam S Arthur, Paul Klimo, Frederick A Boop, Alejandro Berenstein
In 1976 an infant boy initially presented with a choroidal vein of Galen malformation (cVOGM). Craniotomy and clipping of the anterior cerebral artery and posterior choroidal arteries was performed, which was reported in the literature 40 years ago. The patient remained asymptomatic until age 42 when he re-presented with an isolated intraventricular hemorrhage. Angiography demonstrated cVOGM with venous sinus occlusive disease leading to venous hypertension and subsequent intraventricular hemorrhage. The angiogram also demonstrated a 'pseudo-nidus' composed of multiple arterial-to-arterial anastomoses that had developed as a result of the original surgical treatment...
October 4, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27698872/radial-forearm-and-forehead-flap-reconstruction-following-resection-of-a-nasal-arteriovenous-malformation-a-case-report
#13
Chih-Shin Lin, Yung-Song Lin, Bor-Shyh Lin, Ching-Feng Lien, Ching-Feng Liu
Arteriovenous malformation (AVM) is a structural vascular abnormality in which the arterial vasculature connects with the venous vasculature without capillary connections. AVM confined to the nasal cavity is considerably rare. Blurred vision can be one of the associated symptoms. A combined approach of complete surgical resection with prior superselective embolization is the treatment of choice. Following resection, the reconstruction of facial defects, particularly in the nasal area, is challenging. The present study reports the rare case of a patient with an AVM in the nasal cavity, in which embolization, resection and flap reconstruction were performed...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27679690/magnetic-resonance-angiography-in-the-diagnosis-of-cerebral-arteriovenous-malformation-and-dural-arteriovenous-fistulas-comparison-of-time-resolved-magnetic-resonance-angiography-and-three-dimensional-time-of-flight-magnetic-resonance-angiography
#14
Yu-Ching Cheng, Hung-Chieh Chen, Chen-Hao Wu, Yi-Ying Wu, Ming-His Sun, Wen-Hsien Chen, Jyh-Wen Chai, Clayton Chi-Chang Chen
BACKGROUND: Traditional digital subtraction angiography (DSA) is currently the gold standard diagnostic method for the diagnosis and evaluation of cerebral arteriovenous malformation (AVM) and dural arteriovenous fistulas (dAVF). OBJECTIVES: The aim of this study was to analyze different less invasive magnetic resonance angiography (MRA) images, time-resolved MRA (TR-MRA) and three-dimensional time-of-flight MRA (3D TOF MRA) to identify their diagnostic accuracy and to determine which approach is most similar to DSA...
April 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27671884/development-of-de-novo-arteriovenous-malformation-following-ischemic-stroke-case-report-and-review-of-current-literature
#15
Aqueel H Pabaney, Richard A Rammo, Rizwan A Tahir, Donald Seyfried
BACKGROUND: Arteriovenous malformations (AVMs) are hypothesized to be static, congenital lesions developing as early as 4 weeks of fetal life. New literature has shown that AVMs may represent dynamic and reactive vascular lesions arising from cerebral infarction, inflammation, or trauma. A literature search reveals 17 previously reported cases of new AVM formation after previous negative imaging studies. This reactive development or "second hit" theory suggests that at a molecular level, growth factors may play a vital role in aberrant angiogenesis and maturation of an arteriovenous fistula into an AVM...
September 23, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27637962/cerebrovascular-disease
#16
M L P Portegies, P J Koudstaal, M A Ikram
With 16.9 million people who suffered a first-ever stroke in 2010 worldwide, stroke is a very common vascular disease. Epidemiologic studies have played an essential role in assessing this burden and in detecting the risk factors for stroke. Primary prevention of these risk factors, primarily hypertension, smoking, diabetes, and atrial fibrillation, has reduced the incidence in high-income countries. However, stroke remains a major cause of death and disability, and therefore research should be continued. Subarachnoid hemorrhages are less prevalent than strokes but have an even higher risk of death...
2016: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/27637641/multimodal-flow-assisted-resection-of-brain-avms
#17
Alessandro Della Puppa, Renato Scienza
OBJECT: The authors report their personal experience with brain arterio-venous malformations (bAVMs) surgery with a multimodal flow-assisted approach. METHODS: Data from patients who consecutively underwent bAVM resection with the assistance of indocyanine green video-angiography (ICG-VA), micro-flow probe flowmetry, and temporary arterial clipping test under intra-operative monitoring, were retrospectively analyzed. RESULTS: Twenty seven patients were enrolled in the study...
2016: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/27607127/outcome-of-management-of-vascular-malformations-of-lip
#18
Muhammad Sohail, Muhammad Mustehsan Bashir, Hamid Hussain Ansari, Farid Ahmad Khan, Noreen Assumame, Nukhbat Ullah Awan, Asad Aizaz Chatha
OBJECTIVES: To describe the characteristics and outcome of management of vascular malformations of lip. PLACE AND DURATION OF STUDY: The Department of Plastic Surgery and Burn Unit, King Edward Medical University, Mayo Hospital, Lahore, from January 2009 to December 2013. METHODS: A prospective case series of 38 patients with vascular malformation of lip was performed. Demographic information and clinical features were noted. Treatment employed, complications, functional, and cosmetic outcome were recorded...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27602703/congenital-vascular-malformations-of-the-liver-an-association-with-trisomy-21
#19
Oliver C Burdall, Tassos Grammatikopoulos, Maria Sellars, Nedim Hadzic, Mark Davenport
A link between congenital vascular malformation (CVM) of the liver and trisomy 21 has been suggested. We reviewed all children with trisomy 21 referred for investigation to a specialist pediatric hepatobiliary unit (1985-2015). Forty-five children with trisomy 21 were identified; 7 (15%) had a defined CVMs (4 girls). All such infants were also diagnosed with a range of cardiac defects. CVMs were divided according to the nature of the vascular connection. Group (i) (n = 3): Abnormal venovenous anomaly. This included portocaval shunt and patent ductus venosus (n = 2)...
December 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27601828/venolymphatic-vascular-malformation-of-the-parotid-gland-extending-into-the-parapharyngeal-space-a-rare-presentation
#20
Yasmeen Khatib, Madhura Dande, Richa D Patel, Vinod Gite
Vascular malformations (VMs) are structural malformations of vascular development causing soft tissue abnormality with functional and esthetic impairment. They are named by their predominant vessel type as arterial, venous, lymphatic or mixed types. VMs of the parotid gland are extremely rare and constitute a distinct entity of parotid pathology that requires specific diagnostic tools and management. Till 2013, only fifty cases of VMs of the parotid have been described in the literature. We present a case of a venolymphatic malformation of the parotid gland extending into the parapharyngeal space in a 21-year-old male who presented with a swelling on the left side of the face extending into the neck...
May 2016: Journal of Oral and Maxillofacial Pathology: JOMFP
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