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Arterial venous malformation

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https://www.readbyqxmd.com/read/28104640/arterial-spin-labeling-to-discriminate-pediatric-cervicofacial-soft-tissue-vascular-anomalies
#1
G Boulouis, V Dangouloff-Ros, O Boccara, N Garabedian, V Soupre, A Picard, V Couloigner, N Boddaert, O Naggara, F Brunelle
BACKGROUND AND PURPOSE: Differentiating major subtypes of cervicofacial vascular lesions is crucial for appropriate management. The aim of our study was to evaluate the performance of an MR imaging arterial spin-labeling perfusion sequence in discriminating pediatric cervicofacial soft-tissue vascular anomalies. MATERIALS AND METHODS: We conducted a retrospective analysis of data from a prospectively maintained registry including pediatric patients at a tertiary pediatric center between January 2012 and January 2014...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28074536/use-of-an-intravenous-sclerosing-foam-3-sodium-tetradecyl-sulfate-for-treatment-of-orbital-varix-in-a-dog
#2
Rebecca S Saunders, Brian A Scansen, Stephen S Jung, Hooman Khabiri, David A Wilkie
A 6-month-old intact male Standard Dachshund was referred for evaluation of a soft tissue swelling above the right eye. Examination of the right eye revealed mild lateral deviation of the globe, normal vision, and a dorsonasal soft tissue swelling. Examination of the posterior segment was normal. Dual-phase computed tomography angiography was consistent with an orbital varix of the angularis oculi and right dorsal external ophthalmic veins with no evidence of arterial involvement. Treatment involved fluoroscopically guided coil embolization of the venous outflow with nine platinum microcoils, followed by sclerotherapy of the varix using 1...
January 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28031645/shining-pearls-sign-a-new-identity-for-venous-malformations-on-computed-tomographic-imaging
#3
Venkatraman Bhat, Varun Bhat
Vascular malformations, in particular venous malformations (VM), are common lesions involving the pediatric and adolescent population. VM occur at approximately 1:5,000 to 10,000; approximately 40% of them occur in the head and neck regions. Classical appearance of VM on imaging is a demonstration of near-normal-sized or mildly dilated feeding arteries which subsequently lead to dilated venous structures of varying caliber, thus constituting the malformation. Phleboliths are the hallmark of VM. Plain radiography has been an established modality for demonstrating phleboliths...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28028148/strokes-associated-with-pregnancy-and-puerperium-a-nationwide-study-by-the-japan-stroke-society
#4
Kazumichi Yoshida, Jun C Takahashi, Yohei Takenobu, Norihiro Suzuki, Akira Ogawa, Susumu Miyamoto
BACKGROUND AND PURPOSE: The incidence and cause of strokes associated with pregnancy and the puerperium are still not fully understood. The aim of this study was to characterize pregnancy-related strokes in Japan using a large-scale survey with current imaging techniques. METHODS: A retrospective analysis was conducted based on clinical chart reviews in 736 stroke teaching hospitals certified by the Japan Stroke Society between 2012 and 2013, using a web-based questionnaire requesting the detailed clinical course without any personally identifying information...
December 27, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27999914/a-retrograde-transvenous-embolization-technique-with-balloon-assisted-arterial-aspiration-for-a-peripheral-arteriovenous-malformation-with-a-venous-pouch
#5
Asako Kuhara, Norimitsu Tanaka, Masamichi Koganemaru, Tomoko Kugiyama, Kensuke Kiyokawa, Toshi Abe
Management of arteriovenous malformations (AVMs) is challenging, and there is no consensus regarding either the ideal approach or the treatment timing. Percutaneous embolization is the most frequent approach currently used and is considered the first-line technique for AVMs. There is an ongoing discussion about the best technical approach to embolize AVMs. AVMs associated with a dominant outflow vein (DOV) are rare. Embolization of both the DOV and the nidus is considered more effective. Herein, we report a novel technique of transvenous embolization of a DOV under negative pressure from an arterial balloon catheter in a case of a peripheral AVM...
December 20, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27923749/spinal-glomus-arteriovenous-malformation-manifesting-with-a-subarachnoid-hemorrhage
#6
Badih Daou, Elias Atallah, Fadi Al-Saiegh, Kenan Alkhalili, Stavropoula Tjoumakaris, Robert H Rosenwasser, Pascal Jabbour
BACKGROUND: Spinal arteriovenous malformations (AVMs) are rare lesions that may cause serious neurologic morbidity. With developments in endovascular technology and embolic materials, endovascular management of spinal AVMs has gained popularity. CASE DESCRIPTION: A 61-year-old woman presented with the worst headache of her life and an acute onset of nausea and vomiting and was shown to have a grade 2 subarachnoid hemorrhage (SAH) on computed tomography scan. A 6-vessel cerebral angiogram was negative for any vascular abnormalities...
December 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27911229/c-2-arteriovenous-fistula-presenting-as-a-pathologic-hangman-s-fracture-case-report
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
REVIEW
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)...
November 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27766428/multiple-cerebral-arterio-venous-malformations-impact-of-multiplicity-and-hemodynamics-on-treatment-strategies
#16
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...
December 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
#17
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
#18
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
#19
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
#20
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
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