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https://www.readbyqxmd.com/read/29142793/a-ruptured-extra-dural-spinal-arterio-venous-malformation-presenting-as-horner-s-syndrome-the-first-case-report
#1
Sunil Munakomi
We report the first case of a young patient who presented with the features of Horner's syndrome following a spinal extradural hematoma resulting from a ruptured arterio-venous malformation (AVM). Since there were features of early compressive myelopathy as well, urgent magnetic resonance imaging (MRI) scan of the spine revealed features suggestive of an extradural hematoma in the cervico-thoracic junction. The patient underwent an emergent laminectomy with an evacuation of the hematoma. The histological features were consistent with that of an AVM...
September 3, 2017: Curēus
https://www.readbyqxmd.com/read/29142782/massive-left-sided-congestive-colitis-due-to-idiopathic-inferior-mesenteric-arteriovenous-malformation
#2
Laura Martí Gelonch, Jose Maria Enríquez-Navascués, Tania Pastor Bonel, Yolanda Saralegui Ansorena
Arteriovenous malformations (AVM) of the inferior mesenteric artery are rare. They may be primary (congenital or idiopathic) or secondary (acquired) after trauma or of iatrogenic origin. Of the abdominal AVM, the inferior mesenteric trunk is the least commonly involved. Most reported cases are of iatrogenic origin, resulting from colon surgery. Only 17 cases have been described and published in the literature. The objective of this work is to make known a case treated in our center. We present a case of 73-year old male, who came to the emergency service with symptoms of abdominal distension, pain lasting 48 hours along with months of diarrhoea...
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29139152/giant-intracranial-arteriovenous-malformation-as-the-focus-of-epileptic-seizures
#3
Mio Takayama, Kenji Hara, Aya Matsusue, Brian Waters, Natsuki Ikematsu, Masayuki Kashiwagi, Shin-Ichi Kubo
A man in his late thirties was found in a supine position in the hallway of his house. He had been diagnosed with epilepsy at approximately 20 years old. Since stopping treatment, epileptic events occurred more frequently and his condition deteriorated in the past 2 years. Autopsy revealed that head injuries were found on the left side of his head. A fracture from the left parietal bone to the anterior cranial fossa was also detected. A subdural hemorrhage (hematoma) spanned a wide range. A subarachnoid hemorrhage was also identified in the left parietal region...
November 14, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29137094/a-novel-non-contrast-enhanced-mra-using-silent-scan-for-evaluation-of-brain-arteriovenous-malformation-a-case-report-and-review-of-literature
#4
Jin Il Moon, Hye Jin Baek, Kyeong Hwa Ryu, Hyun Park
RATIONALE: Brain arteriovenous malformations (AVMs) are congenital vascular abnormalities involving abnormal connections between arteries and veins. In clinical practice, imaging studies help evaluate feeding arteries, niduses, draining venous systems, and coexisting complications in patients with brain AVM. They also have an impact on decision-making regarding clinical management. We applied a novel non-contrast-enhanced MR angiography (MRA) technique, termed "silent MRA," for evaluating an incidental brain AVM...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29137064/clinical-features-and-prognostic-factors-in-patients-with-intraventricular-hemorrhage-caused-by-ruptured-arteriovenous-malformations
#5
Zengpanpan Ye, Xiaolin Ai, Xin Hu, Fang Fang, Chao You
Intraventricular hemorrhage (IVH) was associated with poor outcomes in patients with intracerebral hemorrhage. IVH had a high incidence in patients with ruptured arteriovenous malformations (AVMs). In this study, we aimed to discuss the clinical features and prognostic factors of outcomes in the patients with AVM-related IVH.From January 2010 to January 2016, we collected the data of the patients with AVM-related IVH retrospectively. The data, including clinical and radiological parameters, were collected to evaluate the clinical features...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29125138/detection-accuracy-for-epithelial-dysplasia-using-an-objective-autofluorescence-visualization-method-based-on-the-luminance-ratio
#6
Nanami Yamamoto, Koji Kawaguchi, Hisako Fujihara, Mitsuhiko Hasebe, Yuta Kishi, Masaaki Yasukawa, Kenichi Kumagai, Yoshiki Hamada
The autofluorescence visualization method (AVM) uses blue excitation light to assist in the diagnosis of epithelial dysplasia. It detects epithelial dysplasia as a black area, which is known as fluorescence visualization loss (FVL). In this study, we evaluated the detection accuracy for epithelial dysplasia of the tongue using the objective AVM and assessed its possible clinical utility. Seventy-nine tongue specimens clinically suspected to have leukoplakia or squamous cell carcinoma (SCC) were analyzed. First, the AVM was subjectively performed using the Visually Enhanced Lesion scope (VELscope), and the iodine-staining method was then performed...
November 10, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/29125025/choroid-plexus-avm-with-anomalous-origin-of-the-capsulothalamic-artery-a-case-report
#7
Shigeru Yamauchi, Taichiro Kawakami, Keiji Murata, Tomoya Ishiguro, Hidetoshi Ikeda, Akimasa Nishio
Background and importance Traditionally, it has been believed that the plexal segment of the anterior choroidal artery (AChoA) can be sacrificed safely. Here, we present a case of choroid plexus arteriovenous malformation (AVM) in which the capsulothalamic artery originated from distal plexal segment of the AChoA. Clinical presentation A 45-year-old man was diagnosed with arteriovenous malformation involving the left inferior horn in screening MRI. Preceding stereotactic radiosurgery, transarterial target embolization was performed...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29124649/angiotensin-receptor-blockade-a-novel-approach-for-symptomatic-radiation-necrosis-after-stereotactic-radiosurgery
#8
Mudit Chowdhary, Derick Okwan-Duodu, Jeffrey M Switchenko, Robert H Press, Jaymin Jhaveri, Zachary S Buchwald, Jim Zhong, Bhavana V Chapman, Ranjit S Bindra, Joseph N Contessa, Henry S Park, James B Yu, Roy H Decker, Jeffrey J Olson, Nelson M Oyesiku, Ross A Abrams, Hui-Kuo G Shu, Walter J Curran, Ian R Crocker, Kirtesh R Patel
Preclinical evidence suggests angiotensin blockade therapy (ABT) decreases late radiation toxicities. This study aims to investigate the association between ABT and symptomatic radiation necrosis (SRN) following stereotactic radiosurgery (SRS). Resected brain metastases (rBM) and arteriovenous malformation (AVM) patients treated with SRS from 2002 to 2015 were identified. Patients in the ABT cohort were on therapy during SRS and at 1-month follow up. Kaplan Meier method and cumulative incidence model were used to analyze overall survival (OS) and intracranial outcomes...
November 9, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29114275/intraoperative-anatomical-and-hemodynamic-analysis-of-intracerebral-arteriovenous-malformations-by-semi-quantitative-color-coded-indocyanine-green-videoangiography
#9
Yoko Kato, Yasuhiro Yamada, Akiyo Sadato, Mohsen Nouri, Iype Cherian, Teppei Tanaka, Joji Inamasu
Objective and Background: To evaluate possible roles for indocyanine green (ICG)-based FLOW 800 software in surgical treatment of cerebral arteriovenous malformations (AVMs). Methods: We perform ICG videoangiography several times for each step of AVM resection to elucidate feeders, drainers, and cerebral perfusion. Results: Since 2010, 22 AVM surgeries in our department have been conducted using FLOW 800 intraoperatively. We demonstrated ICG angiograms, color-coded images, and semi-quantitative curves for AVMs...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29113859/treatment-decision-for-occipital-arteriovenous-malformations-avms-to-achieve-hemorrhagic-control-while-maximizing-visual-preservation-our-experience-and-review-of-literature
#10
REVIEW
Wuyang Yang, Jose L Porras, Eunice Philadelphia, Jody Law, Tomas Garzon-Muvdi, Justin M Caplan, Geoffrey P Colby, Alexander L Coon, Rafael J Tamargo, Judy Huang
Despite concern of hemorrhagic risk, patients with occipital AVMs are at significant risk for visual disturbances after treatment. We aim to characterize the hemorrhage risk and visual disturbance in occipital AVMs patients from our experience and literature review. We performed retrospective review of occipital AVM patients seen at our institution from 1990 to 2015. Patient characteristics were compared using multivariable logistic regression with follow-up visual disturbance as the outcome. We also systematically reviewed the PubMed database for English literature describing occipital AVMs (with exclusion of case reports)...
November 4, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29110021/search-for-rasa1-variants-in-capillary-malformations-of-the-legs-in-113-children-results-from-the-french-national-paediatric-cohort-conape
#11
Annabel Maruani, Marine Durieux-Verde, Juliette Mazereeuw-Hautier, Olivia Boccara, Ludovic Martin, Christine Chiaverini, Catherine Eschard, Nathalie Bénéton, Pierre Vabres, Xavier Balguerie, Patrice Plantin, Didier Bessis, Sébastien Barbarot, Ali Dadban, Catherine Droitcourt, Aline Berthelot, Gérard Lorette, Sophie Leducq, Mahtab Samimi, Christian Andres, Agnès Caille, Patrick Vourc'h
Patients with an inherited autosomal-dominant disorder, capillary malformation-arteriovenous malformation (CM-AVM), frequently have mutations in Ras P21 protein activator 1 (RASA1). The aims of this study were to determine the prevalence of germline RASA1 variants in a French multicentre national cohort of children, age range 2-12 years, with sporadic occurrence of capillary malformation (CM) of the legs, whatever the associated abnormalities, and to identify genotype-phenotype correlates. DNA was extracted from leukocytes in blood samples, purified and amplified, and all exons of the RASA1 gene were analysed...
November 7, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/29109350/-spontaneous-regression-of-pancreatic-arteriovenous-malformation-under-the-influence-of-severe-acute-pancreatitis-a-case-report
#12
Maho Nagasawa, Kazuhito Kawata, Satoru Yamazaki, Takeshi Chida, Hidenao Noritake, Yoshifumi Morita, Takanori Sakaguchi, Shuhei Yamashita, Mika Kamiya, Yoshimasa Kobayashi
A 49-year-old man was diagnosed with severe acute pancreatitis because of pancreatic arteriovenous malformation (AVM). The pancreatic AVM spontaneously regressed during conservative treatment for severe acute pancreatitis. Transarterial embolization of an aneurysm in an artery branch flowing into the pancreatic AVM was performed using metallic coils, following amelioration of severe acute pancreatitis. The complete elimination of the pancreatic AVM was confirmed 1 year after embolization, and the patient has had no recurrence of pancreatic AVM and pancreatitis for over 6 years...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/29106647/contrast-time-density-time-on-digital-subtraction-angiography-correlates-with-cerebral-arteriovenous-malformation-flow-measured-by-quantitative-magnetic-resonance-angiography-angioarchitecture-and-hemorrhage
#13
Denise Brunozzi, Ahmed E Hussein, Sophia F Shakur, Andreas Linninger, Chih-Yang Hsu, Fady T Charbel, Ali Alaraj
BACKGROUND: Digital subtraction angiography (DSA) currently provides angioarchitectural features of cerebral arteriovenous malformations (AVMs) but its role in the hemodynamic evaluation of AVMs is poorly understood. OBJECTIVE: To assess contrast time-density time (TT) on DSA relative to AVM flow measured using quantitative magnetic resonance angiography (QMRA). METHODS: Patients seen at our institution between 2007 and 2014 with a supratentorial AVM and DSA and QMRA obtained prior to any treatment were retrospectively reviewed...
July 6, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29105011/modern-robot-assisted-radiosurgery-of-cerebral-angiomas-own-experiences-system-comparisons-and-comprehensive-literature-overview
#14
Thomas Feutren, Andres Huertas, Julia Salleron, René Anxionnat, Serge Bracard, Olivier Klein, Didier Peiffert, Valérie Bernier-Chastagner
Cerebral arteriovenous malformations (AVMs) are rare vascular lesions potentially responsible for substantial neurological morbidity and mortality. Over the past four decades, radiosurgery has become a valid therapeutic option for many patients with small intracranial AVMs, but reports describing the use of robotic stereotactic radiosurgery (SRS) are rare. The purposes of this study are to describe the efficacy and toxicity of robotic SRS for AVMs and to review the literature. The reports of 48 consecutive patients treated with SRS were reviewed...
November 5, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/29098173/the-roles-of-endoglin-gene-in-cerebrovascular-diseases
#15
Wan Zhu, Li Ma, Rui Zhang, Hua Su
Endoglin (ENG, also known as CD105) is a transforming growth factor β (TGFβ) associated receptor and is required for both vasculogenesis and angiogenesis. Angiogenesis is important in the development of cerebral vasculature and in the pathogenesis of cerebral vascular diseases. ENG is an essential component of the endothelial nitric oxide synthase activation complex. Animal studies showed that ENG deficiency impairs stroke recovery. ENG deficiency also impairs the regulation of vascular tone, which contributes to the pathogenesis of brain arteriovenous malformation (bAVM) and vasospasm...
2017: Neuroimmunology and Neuroinflammation
https://www.readbyqxmd.com/read/29093495/application-of-multimodal-navigation-together-with-fluorescein-angiography-in-microsurgical-treatment-of-cerebral-arteriovenous-malformations
#16
Shiyu Feng, Yanyang Zhang, Zhenghui Sun, Chen Wu, Zhe Xue, Yudong Ma, Jinli Jiang
This study aimed to explore the clinical applications of multimodal navigation combined with indocyanine green (ICG) fluorescein angiography in microsurgical treatment of cerebral arteriovenous malformations (AVMs). We retrospectively collected 52 patients with AVMs. Assisted by anatomic image, we reestablished three-dimensional structure using preoperative functional magnetic resonance imaging (fMRI) and Diffusion tensor imaging (DTI). The operation for lesion resection was finished under the assistance of neuro-navigation...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29066317/does-advanced-age-affect-the-outcomes-of-stereotactic-radiosurgery-for-cerebral-arteriovenous-malformation
#17
Hirotaka Hasegawa, Shunya Hanakita, Masahiro Shin, Takehiro Sugiyama, Mariko Kawashima, Wataru Takahashi, Akihiro K Nomoto, Masaaki Shojima, Hirofumi Nakatomi, Nobuhito Saito
OBJECTIVE: Stereotactic radiosurgery (SRS) is generally considered a minimally invasive treatment modality. However, definitive evidence of the efficacy of SRS in elderly population is still not available. METHODS: The outcomes of 561 elderly and non-elderly patients who underwent SRS for AVM from 1990 to 2013 at our institution were reviewed, analyzed, and compared. Elderly patients were defined as aged ≥ 60 years at the time of SRS. RESULTS: Fifty-five and 506 patients were included in the elderly and non-elderly cohort, respectively...
October 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29064155/assessing-inflammation-in-acute-intracerebral-hemorrhage-with-pk11195-pet-and-dynamic-contrast-enhanced-mri
#18
Kamran A Abid, Oluwaseun A Sobowale, Laura M Parkes, Josephine Naish, Geoff J M Parker, Daniel du Plessis, David Brough, Jack Barrington, Stuart M Allan, Rainer Hinz, Adrian R Parry-Jones
BACKGROUND AND PURPOSE: Studies in animal models suggest that inflammation is a major contributor to secondary injury after intracerebral hemorrhage (ICH). Direct, noninvasive monitoring of inflammation in the human brain after ICH will facilitate early-phase development of anti-inflammatory treatments. We sought to investigate the feasibility of multimodality brain imaging in subacute ICH. METHODS: Acute ICH patients were recruited to undergo multiparametric MRI (including dynamic contrast-enhanced measurement of blood-brain barrier transfer constant (K(trans) ) and PET with [(11) C]-(R)-PK11195)...
October 24, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29049952/learn-from-microbial-intelligence-for-avermectins-overproduction
#19
REVIEW
Qiang Gao, Gao-Yi Tan, Xuekui Xia, Lixin Zhang
Microbial strains are amazingly clever by homeostasis of their own survival and optimization for the overproduction of a desired phenotype, for example drugable secondary metabolites through coordination of key genes overexpression and media optimizations. Besides their pesticide activities, avermectins (AVMs) are identified as potent antibiotic agents for a wide range of drug-resistant pathogens by a high-throughput synergy screening strategy. To rewire the genetic circuitry controlling low yields, we summarized the work on balancing the biological chassis with functional parts, and optimized their dynamical process, as well as predicted favorable effective overproduction of AVMs by 5Ms strategy...
October 16, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29042740/arteriovenous-malformation-of-face
#20
Ashok Kumar, Meenu Mittal, Dhirendra Srivastava, Vipul Jaetli, Sunil Chaudhary
Arteriovenous malformations (AVMs) are rare congenital vascular malformations accounting only 1.5% of all vascular anomalies with 50% occurrence in the oral and maxillofacial region. It usually results from birth defects of the vasculature. A literature search revealed only few case reports of AVMs in the facial region. Lack of meticulous diagnosis, scarcity of knowledge, and paucity of literature can result in their exsanguinations leading to fatal hemorrhagic incidents after various dental procedures such as tooth extraction, surgical intervention, puncture wound, or blunt injury in involved area...
July 2017: Contemporary Clinical Dentistry
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