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Arteriovenous malformation

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https://www.readbyqxmd.com/read/28945054/intracranial-stereotactic-radiosurgery
#1
Andrew A Fanous, Dheerendra Prasad, David Mathieu, Andrew J Fabiano
Stereotactic radiosurgery (SRS) is the use of a single high dose of radiation, stereotactically directed to an intracranial region of interest, in order to create a lesion or obliterate a preexisting one. This technology has evolved over the years into the use of multiple radiation sources oriented at a variety of angles, thus permitting the creation of various treatment target shapes. This allows for non-open surgical treatment of intracranial pathologies, which significantly decreases the risk of morbidity...
September 22, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28944082/ultra-short-echo-time-magnetic-resonance-imaging-for-detection-of-pulmonary-arteriovenous-malformation-recanalization-after-coil-embolization-a-case-report-and-a-phantom-study
#2
Kohei Hamamoto, Emiko Chiba, Katsuhiko Matsuura, Tomohisa Okochi, Keisuke Tanno, Osamu Tanaka
A pulmonary arteriovenous malformation (PAVM) is a direct connection between the pulmonary arteries and veins for which metallic coil transcatheter embolization is the standard of care. Detecting recanalization after PAVM treatment is crucial, but direct visualization with computed tomography or magnetic resonance imaging (MRI) is generally difficult. Here, we report a case of a recanalized PAVM that was directly detected with ultra-short echo time MRI. The detection of these signals in the coils was confirmed in a phantom study...
September 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28937545/non-contrast-pseudo-continuous-arterial-spin-labeling-and-accelerated-3-dimensional-radial-acquisition-intracranial-3-dimensional-magnetic-resonance-angiography-for-the-detection-and-classification-of-intracranial-arteriovenous-shunts
#3
Tilman Schubert, Zachary Clark, Carolina Sandoval-Garcia, Ryan Zea, Oliver Wieben, Huimin Wu, Patrick A Turski, Kevin M Johnson
OBJECTIVES: The aim of this study was to assess the sensitivity and specificity of pseudo-continuous arterial spin labeling (PCASL) magnetic resonance angiography (MRA) with 3-dimensional (3D) radial acquisition for the detection of intracranial arteriovenous (AV) shunts. MATERIALS AND METHODS: A total of 32 patients who underwent PCASL-MRA, clinical magnetic resonance imaging (MRI)/MRA exam, and digital subtraction angiography (DSA) were included in this retrospective analysis...
September 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28936439/a-case-of-pulmonary-arteriovenous-malformation-role-of-interventional-radiology-in-diagnosis-and-treatment
#4
Pranav Sharma, Puneet Kochar, Salil Sharma, Nishant Gupta, Shuo Li, Kusum Hooda, Yogesh Kumar
Pulmonary arterio-venous malformations (PAVMs) are abnormal pulmonary arteries and pulmonary veins communicating directly without interposition of a capillary bed and about 80-90% of patients with PAVMs eventually may present with hereditary hemorrhagic telangiectasia (HHT), remaining ones are sporadic cases. On the other hand, about 15-35% of HHT patients may present with PAVMs. The PAVMs have a tendency to grow and increase in size over time and various factors like puberty, pregnancy and pulmonary arterial hypertension (PAH) affect growth...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28935329/bidirectional-inferior-cavopulmonary-anastomosis-pre-fontan-interim-palliation
#5
Muhammad Aanish Raees, Driss Mazhar, Jason T Christensen, David Andres Parra, Stacy Killen, David P Bichell
We report a novel method of constructing an extracardiac bidirectional inferior cavopulmonary anastomosis. Our patient was a 4-month-old girl with complex single-ventricle anatomy and a small-caliber superior vena cava. A direct anastomosis from the inferior vena cava to the main pulmonary artery was constructed by using all autologous tissue. The resulting pathway remained patent and exhibited growth with age. Furthermore, a pulmonary arteriovenous malformation did not develop. This case demonstrates how a bidirectional inferior cavopulmonary anastomosis is feasible in the human and can provide similar hemodynamic results as the bidirectional superior cavopulmonary anastomosis...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28931259/combined-transsylvian-transventricular-approach-to-a-hippocampal-arteriovenous-malformation-3-dimensional-operative-video
#6
Mohamed A Labib, Amir R Dehdashti
No abstract text is available yet for this article.
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931254/cavernomas-and-arteriovenous-malformations-in-the-mesial-temporal-region-microsurgical-anatomy-and-approaches
#7
Alvaro Campero, Pablo Ajler, Carlos Rica, Albert Rhoton
BACKGROUND: The mesial temporal region (MTR) is located deep in the temporal lobe and it is surrounded by important vascular and nervous structures that should be preserved during surgery. OBJECTIVE: To describe microsurgical anatomy and approaches to the MTR in relation to cavernomas and arteriovenous malformations (AVMs). METHODS: Five formalin-fixed and red silicone-embedded heads of adult cadavers were used for this study. Between January 2003 and June 2014, 7 patients with cavernomas and 6 patients with AVMs in the MTR underwent surgery...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28928590/arteriovenous-malformation-of-face-a-challenge-to-anesthesiologists
#8
S Neeta, Rammoorthi Rao, Madhusudan Upadya, P Keerthi
Arteriovenous (AV) malformations of the face are rare presentations. Endovascular coiling is one of the treatment modalities. We report a case of a 65-year-old lady who presented with a large AV malformation of the face located around the nasal bride and alae nasae posted for coiling under general anesthesia. Anesthetic management of the case was a challenge as it was an anticipated difficult airway situation. Furthermore, any pressure on the swelling can lead to rupture and hemorrhage as the skin above swelling was unhealthy...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928561/periprocedural-management-of-vein-of-galen-aneurysmal-malformation-patients-an-11-year-experience
#9
Ajay Prasad Hrishi, Karen Ruby Lionel
CONTEXT: The vein of Galen aneurysmal malformation (VGAM) is a rare arteriovenous malformation where a dilated median prosencephalic vein provides a low-resistance conduit for intracerebral blood flow resulting in high-output cardiac failure, severe pulmonary hypertension, with or without central nervous system symptoms secondary to hydrocephalus, in the neonatal and pediatric population. AIM: This study aims to analysis of the anesthetic management of this unique subset of patients with VGAM...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28927913/association-of-acvrl1-genetic-polymorphisms-with-arteriovenous-malformations-a-case-control-study-and-meta-analysis
#10
Mingxu Ge, Chigang Du, Zhaona Li, Yingchao Liu, Shangchen Xu, Liyong Zhang, Qi Pang
OBJECTIVE: To investigate the association between polymorphisms in the gene encoding activin receptor-like kinase 1 (ACVRL1) with brain arteriovenous malformations (BAVMs) using a case-control study in a Chinese Han population, followed by a meta-analysis of the published literature. METHODS: This study focused on the genotypic analysis of four single nucleotide polymorphisms (SNPs; rs2071219, rs706819, rs2293094, and rs11169953) in 50 BAVM patients and 120 healthy volunteers attending Provincial Hospital in China...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28927739/antithrombotic-use-predicts-recanalization-of-embolized-pulmonary%C3%A2-arteriovenous-malformations-in-hereditary-hemorrhagic%C3%A2-telangiectasia
#11
Jason L Martin, Marie E Faughnan, Vikramaditya Prabhudesai
No abstract text is available yet for this article.
September 15, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28922896/contralateral-anterior-interhemispheric-approach-to-medial-frontal-arteriovenous-malformations-surgical-technique-and-results
#12
(no author information available yet)
No abstract text is available yet for this article.
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28917252/stereotactic-radiosurgery-of-the-brain-a-review-of-common-indications
#13
Philip Gilbo, Isabella Zhang, Jonathan Knisely
Over the past half-century since Lars Leksell first utilized radiation to address deep and difficult to treat lesions of the central nervous system (CNS), intracranial stereotactic radiosurgery (SRS) has become an increasingly valued tool in the hands of neurosurgeons and radiation oncologists. Following developments in medical imaging and radiation technology, radiosurgery has evolved from its first application in movement disorders to widespread use for a varied range of malignant and benign conditions. SRS remains a powerful, minimally invasive instrument that offers additional options for intervention to a diverse patient population...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28917138/pulmonary-venous-anomalies-causing-misdiagnosis-of-pulmonary-arteriovenous-malformations
#14
Cheng Ting Lin, Stefan Loy Zimmerman, Sally Elizabeth Mitchell, Elliot K Fishman
PURPOSE: To investigate pulmonary venous anomaly as a cause of pulmonary arteriovenous malformation (PAVM) misdiagnosis. MATERIALS AND METHODS: We reviewed adult patients within a 7.5-year period with CT scans initially diagnosed with PAVM and subsequent conventional pulmonary angiograms. RESULTS: Pulmonary arteriography showed no PAVM on arterial phase for 10 out of 99 patients, comprising the misdiagnosed group. Four misdiagnosed patients had pulmonary venous anomalies and six had nodular lesions on CT...
September 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28914869/-spinal-dural-arteriovenous-fistulas-a-series-of-clinical-cases-and-an-analysis-of-the-literature-data
#15
K N Babichev, V P Orlov, A V Stanishevskiy, A V Savello, D V Svistov
Spinal dural arteriovenous fistulas (SDAVFs) are the most common vascular malformation of the spinal cord, causing segmental lesions of the spinal cord due to venous ischemia. Functional outcomes of treatment in SDAVF patients are favorable, but the rate of improvement varies from 25 to 100%, which complicates prediction of the treatment outcome. AIM: the study aim was to identify a relationship between fistula localization and clinical manifestations and evaluate the effect of disease duration and severity of neurological impairments on immediate and long-term treatment outcomes, based on analysis of the literature and own data...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28914868/-combination-treatment-of-cerebral-arteriovenous-malformations-using-endovascular-and-microsurgical-techniques
#16
D M Galaktionov, A V Dubovoy, V S Kiselev, A O Sosnov, K S Ovsyannikov, A M Perfil'ev, A V Cherepanov
MATERIAL AND METHODS: The study included 40 patients with cerebral AVMs. In the study group, 14 (35%) patients underwent microsurgical resection without preliminary embolization (1st group), and 26 (65%) patients underwent combined treatment (endovascular embolization and microsurgical intervention, 2nd group). The first group included patients with S&M grade I-III AVMs, and the second group included patients with S&M grade II-V AVMs. Treatment outcomes were evaluated with allowance for completeness of AVM resection, operative blood loss, duration of surgery, changes in clinical and neurological impairments according to the modified Rankin scale, and rate of neurological and surgical complications...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28904828/usefulness-of-dural-surface-tracing-of-the-cortical-vessels-with-indocyanine-green-videoangiography-just-prior-to-dural-opening-for-various-cerebrovascular-diseases
#17
Naoki Otani, Kojiro Wada, Terushige Toyooka, Satoru Takeuchi, Arata Tomiyama, Kentaro Mori
BACKGROUND: Indocyanine green (ICG) videoangiography can be used to delineate the locations of the cortical vessels just prior to dural opening, allowing safe and optimal dural opening. The present clinical series demonstrates the adjunct use of ICG videoangiography to optimize dural opening for the treatment of various cerebrovascular diseases. METHODS: A total of 45 patients underwent surgery for superficial temporal artery-middle cerebral artery bypass (40), arteriovenous malformation (2), and dural arteriovenous fistula (3) between January 2012 and December 2016...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28902645/-a-rare-cause-of-cyanosis-in-childhood-pulmonary-arteriovenous-malformation
#18
Osman Güvenç, Murat Saygı, İbrahim Halil Demir, Ender Ödemiş
Pulmonary arteriovenous malformation, which is defined as the presence of an ab-normal connection between the pulmonary artery and pulmonary vein, is rarely seen. Although it generally presents as a congenital condition, it may be accompanied by hereditary hemorrhagic telangiectasia. Clinical signs vary according to the amount of shunt in proportion to the number and size of the fistulae. Patients may present with cyanosis and respiratory trouble. If the disease remains untreated, it may result in cardiac failure and ineffective endocarditis, thereby leading to the rupture of the an-eurysmal fistula...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28899673/detection-of-arteriovenous-malformations-on-the-underside-of-the-duodenal-papilla
#19
Kevin P Cowley, Abdul El Chafic, Matthew Rice
No abstract text is available yet for this article.
September 9, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28894970/timing-of-surgery-for-ruptured-supratentorial-arteriovenous-malformations
#20
Ahmad Hafez, Elias Oulasvirta, Päivi Koroknay-Pál, Mika Niemelä, Juha Hernesniemi, Aki Laakso
BACKGROUND: There are conflicting opinions regarding the optimal waiting time to perform surgery after rupture of supratentorial arteriovenous malformations (AVMs) to achieve the best possible outcome. OBJECTIVE: To analyze factors influencing outcomes for ruptured supratentorial AVMs after surgery, paying particular attention to the timing of the surgery. METHODS: We retrospectively investigated 59 patients admitted to our center between 2000 and 2014 for surgical treatment of ruptured supratentorial AVMs...
September 11, 2017: Acta Neurochirurgica
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