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Arteriovenous Malformations

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https://www.readbyqxmd.com/read/29241929/fertility-outcomes-following-pelvic-embolization-in-women-with-acquired-uterine-arteriovenous-malformation
#1
Cheng-Yu Ho, Kok-Min Seow, Lee-Wen Huang, Yieh-Loong Tsai
OBJECTIVE: Acquired uterine arteriovenous malformation (UAVM) is a rare, life-threatening disease. Angiography with uterine arterial embolization (UAE) is the diagnostic tool and a choice of fertility-sparing treatment. Here, we present a series of five successful pregnancies after embolization of UAVM. CASE REPORTS: Three reproductive aged women were treated for UAVM, resulting in five successful pregnancies. Their past history suggested that three cases had had previous uterine procedures, including second trimester abortion and elective dilatation and curettage...
December 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29237147/treatment-of-early-stage-extracranial-arteriovenous-malformations-with-intralesional-interstitial-bleomycin-injection-a-pilot-study
#2
Yunbo Jin, Yun Zou, Chen Hua, Hui Chen, Xi Yang, Gang Ma, Lei Chang, Yajing Qiu, Dongze Lyu, Tianyou Wang, Shih-Jen Chang, Congzhen Qiao, Chunfen Luo, Mathias Tremp, Xiaoxi Lin
Purpose To assess the efficacy and safety of intralesional interstitial bleomycin injection in the treatment of early-stage (Schobinger stage I or II) extracranial arteriovenous malformations (AVMs). Materials and Methods This prospective study involved 34 patients with early-stage AVMs, as defined by the Schobinger staging system. The patients received intralesional interstitial bleomycin injected at a maximum dose of 15 000 IU or 1000 IU per kilogram of body weight for children who weighed less than 15 kg per procedure for a total of 6 months (once every month)...
December 13, 2017: Radiology
https://www.readbyqxmd.com/read/29232026/noncontrast-enhanced-time-resolved-4d-dynamic-intracranial-mr-angiography-at-7t-a-feasibility-study
#3
Fei Cong, Yan Zhuo, Songlin Yu, Xianchang Zhang, Xinyuan Miao, Jing An, Shuo Wang, Yong Cao, Yan Zhang, Hee Kwon Song, Danny Jj Wang, Lirong Yan
BACKGROUND: Arterial spin labeling (ASL) based-noncontrast-enhanced 4D MR angiography (NCE 4D MRA) shows potential in characterizing cerebrovascular hemodynamics in cerebrovascular disorders. Ultrahigh-field theoretically benefits ASL signal with increased inherent signal-to-noise ratio (SNR) and prolonged blood T1 , which may provide improved delineation of vasculature in 4D MRA. PURPOSE: To investigate the feasibility of NCE 4D MRA using 3D Cartesian trajectory and stack-of-stars (SOS) golden angle radial trajectory at 7T...
December 12, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29230182/a-network-model-to-explore-the-effect-of-the-micro-environment-on-endothelial-cell-behavior-during-angiogenesis
#4
Nathan Weinstein, Luis Mendoza, Isidoro Gitler, Jaime Klapp
Angiogenesis is an important adaptation mechanism of the blood vessels to the changing requirements of the body during development, aging, and wound healing. Angiogenesis allows existing blood vessels to form new connections or to reabsorb existing ones. Blood vessels are composed of a layer of endothelial cells (ECs) covered by one or more layers of mural cells (smooth muscle cells or pericytes). We constructed a computational Boolean model of the molecular regulatory network involved in the control of angiogenesis...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29223944/-pancreatic-arteriovenous-malformation-as-cause-of-acute-pancreatitis-treated-by-endovascular-access
#5
Gustavo Kohan, Matías Provenzano, Martín Rosado, Grisel Farfan, Nicolás Sánchez, Denise Fastman
Arteriovenous malformation in the pancreas is a rare anatomic abnormality that may produce acute pancreatitis. The diagnosis was suspected by computed tomography with intravenous contrast and by magnetic resonance imaging and it was confirmed by arteriography of the celiac trunk and superior mesenteric artery. The treatment received was endovascular, although the other valid option for the treatment of this disease is the surgical resection. The objective of this communication is to present a case of acute pancreatitis due to arteriovenous malformation treated by endovascular approach...
2017: Medicina
https://www.readbyqxmd.com/read/29223517/combined-spinal-arteriovenous-malformation-and-spinal-dysraphism
#6
Civan Islak, Sedat Giray Kandemirli, Osman Kizilkilic, Naci Kocer, Saffet Tuzgen, Mehmet Murat Hanci
BACKGROUND: Spinal vascular malformations as a group are rare entities and coexistence of spinal arteriovenous malformation in or around the spinal dysraphism is extremely rare. CASE DESCRIPTION: Herein, we report two cases of combined spinal dysraphism and vascular malformations of the spinal cord. The first case is an arteriovenous malformation located in a filum terminale lipoma fed by the artery of filum terminale. This case was managed by multiple endovascular embolizations followed by surgery...
December 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29221972/angiopoietin-like-proteins-4-angptl4-gene-polymorphisms-and-risk-of-brain-arteriovenous-malformation
#7
Sarafroz A Erkinova, Ekaterina A Sokolova, Kirill Y Orlov, Vitaly S Kiselev, Nikolay V Strelnikov, Andrey V Dubovoy, Elena N Voronina, Maxim L Filipenko
BACKGROUND: Brain arteriovenous malformations (BAVMs) are formed by hypertrophied arterial vessels (afferents, feeders), a large number of arteriovenous shunts which become tangled to form a body (nidus) of malformation, which then expands draining proximal veins. The aim of this study was a replication of single nucleotide polymorphism (SNP) rs11672433 association with BAVM development with the subsequent meta-analysis of published data. METHODS: A total of 252 Russian patients with brain BAVMs and 480 control subjects were included in the present study...
December 5, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29221921/ethanol-embolotherapy-for-the-management-of-refractory-chronic-skin-ulcers-caused-by%C3%A2-arteriovenous-malformations
#8
YunBo Jin, Xi Yang, Chen Hua, XiaoXi Lin, Hui Chen, Gang Ma, TianYou Wang, WenXin Yu
PURPOSE: To describe the clinical features and treatment outcomes of ethanol embolotherapy in refractory chronic skin ulcers caused by arteriovenous malformations (AVMs). MATERIALS AND METHODS: From October 2011 to October 2015, 12 patients (5 male; mean age, 26.2 y) with refractory chronic skin ulcers caused by AVMs were treated at a single institution. Ethanol embolotherapy was performed by direct puncture techniques. Needles were directly inserted toward the nidus of the lesion based on imaging analysis...
December 5, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29217806/synovial-arteriovenous-malformation-masquerading-as-arthritis
#9
Pooja Prakash Mallya, Anand Prahalad Rao
BACKGROUND: Synovial arteriovenous malformation is rare. CASE CHARACTERISTICS: We present three children with recurrent monoarthritis secondary to synovial arteriovenous malformation. OUTCOME: Two children underwent excision of arteriovenous malformation. Another child had diffuse arteriovenous malformation, which was inoperable. MESSAGE: Synovial arteriovenous malformations should be considered in the differential diagnosis of monoarthritis, especially of the knee...
November 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/29217071/psychosocial-impact-of-vascular-anomalies-on-children-and-their-families
#10
REVIEW
Alexandra G Espinel, Nancy M Bauman
Vascular anomalies are divided into tumors and malformations based on their clinical and cytologic attributes. Vascular malformations are further subcategorized as low-flow lymphatic, venous, capillary, or mixed lesions and as high-flow arteriovenous malformations. Treatment is reserved for vascular anomalies that are symptomatic or cosmetically disfiguring, and surgical and nonsurgical treatment options are widely varied with variable outcomes.
February 2018: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/29217062/arteriovenous-malformations-of-the-head-and-neck
#11
REVIEW
Tara L Rosenberg, James Y Suen, Gresham T Richter
Extracranial arteriovenous malformations (AVMs) are complex vascular malformations to diagnose and treat. They are comprised of congenitally derived arteriovenous shunts with chronic vascular expansion, collateralization, and infiltration of local tissue. Their cause remains unclear, but new genetic and molecular clues are emerging. They may present at any age following an early quiescent period. Diagnosis is based on vascular staining, soft tissue expansion, progressive growth, warmth, and pulsations. Focal lesions can be cured, whereas diffuse AVMs demonstrate highly recidivistic disease...
February 2018: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/29216502/intraventricular-hemorrhage-related-to-avm-rupture-description-outcomes-and-impact-of-intraventricular-fibrinolysis
#12
Vianney Gilard, Thomas Metayer, Clement Gakuba, Olivier Langlois, François Proust, Evelyne Emery, Thomas Gaberel
OBJECTIVES: Arteriovenous malformation (AVM) rupture could lead to intraventricular hemorrhage (IVH), a particularly severe form of intracranial bleeding. The epidemiology, presentation, management and outcomes of IVH related to AVM rupture have not been clearly addressed yet. The aim of the present study was to investigate the characteristics of IVH related to AVM rupture, with particular attention paid to functional outcomes and to the impact of intraventricular fibrinolysis (IVF). PATIENTS AND METHODS: Between 2011 and 2015, all patients suffering from IVH admitted in two tertiary neurosurgical centers were included in a prospective register...
December 4, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29211896/letter-contralateral-anterior-interhemispheric-approach-to-medial-frontal-arteriovenous-malformations-surgical-technique-and-results
#13
Atul Goel
No abstract text is available yet for this article.
November 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29211868/in-reply-contralateral-anterior-interhemispheric-approach-to-medial-frontal-arteriovenous-malformations-surgical-techniques-and-results
#14
Michael T Lawton
No abstract text is available yet for this article.
November 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29210083/a-novel-association-between-high-red-blood-cell-alloimmunization-rates-and-hereditary-hemorrhagic-telangiectasia
#15
Yan Zheng, Jeffrey Pollak, Katharine Henderson, Jeanne E Hendrickson, Christopher A Tormey
BACKGROUND: Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant disorder associated with multiple arteriovenous malformations. HHT patients may require red blood cell (RBC) transfusion due to spontaneous hemorrhage or surgical bleeding. Because HHT-associated hemorrhage often occurs in submucosa we hypothesized that RBC alloimmunization rates in HHT patients may be higher than those observed in other transfused patients and investigated this in a retrospective study. STUDY DESIGN AND METHODS: Eighty-five patients with HHT who were transfused at our tertiary care facility were identified...
December 6, 2017: Transfusion
https://www.readbyqxmd.com/read/29205641/clinical-and-arterial-spin-labeling-brain-mri-features-of-transitional-venous-anomalies
#16
Michael Zhang, Nicholas A Telischak, Nancy J Fischbein, Gary K Steinberg, Michael Marks, Greg Zaharchuk, Jeremy J Heit, Michael Iv
BACKGROUND AND PURPOSE: Transitional venous anomalies (TVAs) are rare cerebrovascular lesions that resemble developmental venous anomalies (DVAs), but demonstrate early arteriovenous shunting on digital subtraction angiography (DSA) without the parenchymal nidus of arteriovenous malformations (AVMs). We investigate whether arterial spin labeling (ASL) magnetic resonance imaging (MRI) can distinguish brain TVAs from DVAs and guide their clinical management. METHODS: We conducted a single-center retrospective review of patients with brain parenchymal DVA-like lesions with increased ASL signal on MRI...
December 4, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29204306/facial-palsy-after-embolization-of-dural-arteriovenous-fistula-a-case-report-and-literature-review
#17
Luana Antunes Maranha Gatto, Fernando Saurin, Gelson Luis Koppe, Zeferino Demartini
Background: Dural arteriovenous fistulas (DAVF) are unusual intracranial vascular malformations consisting of anomalous connections between meningeal arteries and dural sinuses or the veins that pass through them. They have variable clinical presentation and prognosis, which depend on their location and venous hemodynamics. Treatment is based on the closure of the abnormal connections, which is usually conducted via arterial and/or transvenous endovascular techniques. Case Description: We present a male patient who complained of headaches and left-sided pulsatile tinnitus due to DAVF from the external carotid artery branches draining directly into the ipsilateral sigmoid sinus...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29201224/expression-of-nf-e2-related-factor-2-in-a-rat-dural-arteriovenous-fistula-model
#18
Limin Dou, Wenhua Yu
Intracranial dural arteriovenous fistulas (DAVFs) are complex intracranial vascular malformations that may lead to hemorrhage. Although the precise mechanisms by which DAVFs occur remain unknown, dural angiogenesis may be a vital factor in its pathogenesis. Nuclear factor erythroid 2-related factor 2 (Nrf2) significantly influences angiogenesis; however, the association between DAVF and Nrf2 remains unclear. Therefore, the present study investigated whether DAVF alters the expression of Nrf2 in an experimental animal model of DAVF...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29198888/salvage-therapy-for-brain-arteriovenous-malformations-after-failure-of-gamma-knife-stereotactic-radiosurgery
#19
Kai Quan, Xuqun Tang, Jianping Song, Xiancheng Chen, Yanlong Tian, Peixi Liu, Yuan Shi, Zixiao Yang, Yinjun Liu, Feng Zhou, Li Pan, Wei Zhu
OBJECTIVE: The aim of this study was to investigate delayed complications in brain arteriovenous malformation (BAVM) patients after gamma knife stereotactic radiosurgery (GKRS) and to present the salvage therapy experiences of BAVM patients with radiation-induced changes (RICs) or intracranial hemorrhage (ICH). METHODS: This cohort consisted of 44 BAVM patients who underwent failed GKRS between 2000 and 2015. These patients were further divided into an RIC group (23 patients) and an ICH group (21 patients) based on their post-GKRS complications...
November 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29196574/clinical-biomarkers-differentiate-myelitis-from-vascular-and-other-causes-of-myelopathy
#20
Paula Barreras, Kathryn C Fitzgerald, Maureen A Mealy, Jorge A Jimenez, Daniel Becker, Scott D Newsome, Michael Levy, Philippe Gailloud, Carlos A Pardo
OBJECTIVE: To assess the predictive value of the initial clinical and paraclinical features in the differentiation of inflammatory myelopathies from other causes of myelopathy in patients with initial diagnosis of transverse myelitis (TM). METHODS: We analyzed the clinical presentation, spinal cord MRI, and CSF features in a cohort of 457 patients referred to a specialized myelopathy center with the presumptive diagnosis of TM. After evaluation, the myelopathies were classified as inflammatory, ischemic/stroke, arteriovenous malformations/fistulas, spondylotic, or other...
December 1, 2017: Neurology
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