33,932 results match your criteria Arteriovenous Malformations


Embolization Techniques for Arteriovenous Malformations in Parkes-Weber Syndrome.

Ann Vasc Surg 2020 May 29. Epub 2020 May 29.

The AVM Center of New York at Lenox Hill, Northwell Health System.

Objectives: Multiple high-flow arteriovenous malformations (AVMs) are the hallmark of Parkes-Weber syndrome (PWS). Surgical resection has historically shown poor outcomes with PWS. The aim of this study was to assess the management of PWS in the current era. Read More

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http://dx.doi.org/10.1016/j.avsg.2020.05.039DOI Listing

Commentary: Hepatic vein blood increases lung microvascular angiogenesis and Pulmonary arteriovenous malformations: Adding clarity to the confusion or vice-versa ?

Authors:
Minoo N Kavarana

Semin Thorac Cardiovasc Surg 2020 May 29. Epub 2020 May 29.

Section of Pediatric Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC. Electronic address:

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http://dx.doi.org/10.1053/j.semtcvs.2020.05.024DOI Listing

Method for Safely Excising a Large Head and Neck Arteriovenous Malformation in the Hybrid Operating Room.

J Craniofac Surg 2020 May 28. Epub 2020 May 28.

Division of Plastic and Reconstructive Surgery, Northwell Health, Great Neck, NY.

Large head and neck arteriovenous malformations are notoriously difficult to manage given their location and propensity for extreme hemorrhage. We propose a unique approach utilizing a Hyperform balloon and percutaneous Surgiflo sclerotherapy to provide intraoperative hemostatic stability during the excision of a left-sided scalp arteriovenous malformation. In a hybrid operating room a microcatheter balloon was fed into the left external carotid artery for occlusion of the malformation's main blood supply, and subsequently followed with digital subtraction angiography guided sclerotherapy of selective vessels. Read More

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http://dx.doi.org/10.1097/SCS.0000000000006579DOI Listing

Imaging of Vascular Malformations.

Radiol Clin North Am 2020 Jul 23;58(4):815-830. Epub 2020 Apr 23.

Department of Radiology, Johns Hopkins Hospital, 601 North Caroline Street, Baltimore, MD 21287, USA. Electronic address:

Recent advances in imaging have allowed a better understanding of imaging features and classification of vascular anomalies. This article focuses on imaging of vascular malformations; describes the updated classification system and clinical and imaging characteristics of the different subtypes; and discusses the associated syndromes, differential diagnosis, and available treatment options, including the role of imaging in management. Read More

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http://dx.doi.org/10.1016/j.rcl.2020.02.003DOI Listing

Capillary-venule malformation a microfistulous variant of arteriovenous malformation.

J Vasc Surg Venous Lymphat Disord 2020 May 26. Epub 2020 May 26.

Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. Electronic address:

Objective: To describe typical clinical presentation of patients with microfistular, capillary- venule (CV) malformation as a variant form of arterio-venous malformations (AVM).

Methods: A retrospective clinical analysis of 15 patients with CV-AVM confirmed by a computational flow model enrolled in a prospective database of patients with congenital vascular malformation between January 2008 and May 2018.

Results: Mean age of patients at first time of presentation was 30 years with balanced gender ratio. Read More

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http://dx.doi.org/10.1016/j.jvsv.2020.05.012DOI Listing

Significant Restrictive or Obstructive Lung Diseases are Associated with an Increased Risk of Gastrointestinal Bleeding in Patients on Left Ventricular Assist Device Support.

J Heart Lung Transplant 2020 Apr 30;39(4S):S395. Epub 2020 Mar 30.

Cardiology, Montefiore Medical Center, New York City, NY.

Purpose: Despite the recent advances in Left Ventricular Assist Device (LVAD) therapy, gastrointestinal bleeding (GIB) remains a frequent and severe complication. A growing body of evidence suggests that the combination of hypoperfusion and hypoxia in the microcirculation may activate the angiogenesis cascade and promote the formation of arteriovenous malformations. We hypothesized that LVAD patients with concomitant significant restrictive or obstructive lung diseases may have an increased risk of GIB due to their chronic hypoxemic state. Read More

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http://dx.doi.org/10.1016/j.healun.2020.01.525DOI Listing

"Please mind the gap": successful use of ultrasound-assisted spinal anesthesia for urgent cesarean section in a patient with implanted spinal cord stimulation system for giant chest wall arteriovenous malformation - a case report.

BMC Anesthesiol 2020 May 23;20(1):122. Epub 2020 May 23.

Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Università Cattolica del Sacro Cuore, Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Largo A. Gemelli 8, 00168, Rome, Italy.

Background: The use of Spinal Cord Stimulation (SCS) system to treat medically refractory neuropathic pain is increasing. Severe neuropathic pain can be found in giant chest wall arteriovenous malformations (AVMs), exceedingly rare and debilitating abnormalities, rarely reported during pregnancy.

Case Presentation: We present a report of a pregnant patient with implanted Spinal Cord Stimulation (SCS) system because of painful thoracic AVM scheduled for an urgent cesarean section in which we used lumbar ultrasound (US) to rule out the possibility to damage SCS electrodes and to find a safe site to perform spinal anesthesia. Read More

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http://dx.doi.org/10.1186/s12871-020-01042-6DOI Listing

Hydrocephalus in children with ruptured cerebral arteriovenous malformation.

J Neurosurg Pediatr 2020 May 22:1-5. Epub 2020 May 22.

1APHP, Necker Hospital, Université de Paris.

Objective: Hydrocephalus is a strong determinant of poor neurological outcome after intracerebral hemorrhage (ICH). In children, ruptured brain arteriovenous malformations (bAVMs) are the dominant cause of ICH. In a large prospective cohort of pediatric patients with ruptured bAVMs, the authors analyzed the rates and predictive factors of hydrocephalus requiring acute external ventricular drainage (EVD) or ventriculoperitoneal shunt (VPS). Read More

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http://dx.doi.org/10.3171/2020.3.PEDS19680DOI Listing

Changes in clinical presentation and treatment over time in patients with unruptured intracranial AVMs.

World Neurosurg 2020 May 19. Epub 2020 May 19.

Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota, USA. Electronic address:

Objective: Treatment of unruptured intracranial arteriovenous malformations (AVMs) has become controversial since the ARUBA study was published in 2014. We sought to analyze changes in the demographics, clinical presentation and treatment strategies in two patient cohorts from the same institution separated by 40 years.

Methods: We retrospectively reviewed the electronic medical records for a consecutive series of patients with unruptured intracranial AVMs seen at the Mayo Clinic between 2003-2017 and compared them to a previously published historical cohort from the same institution, seen between 1974-1985. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.05.094DOI Listing

Major limb amputations in patients with congenital vascular malformations.

Ann Vasc Surg 2020 May 18. Epub 2020 May 18.

Department of Surgery, Lenox Hill Hospital, Northwell Health System.

Objective: The need for major amputations in patients with vascular malformations is rare. This study reviews our contemporary experience with major amputations in patients with vascular malformations.

Methods: A retrospective review from April 2014 to November 2018 identified 993 patients undergoing management of a vascular malformation involving the upper or lower extremity at a tertiary center. Read More

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http://dx.doi.org/10.1016/j.avsg.2020.04.058DOI Listing

Facial Artery Arteriovenous Malformation Endovascular and Surgical Treatment: Liquid Embolic Device an Advantage for Both Technique.

Acta Neurol Taiwan 2020 Jun;29(2):54-58

Department of Diagnostic and Therapeutic Advanced Technology - Diagnostic and Interventional Radiology Unit Azienda Socio Sanitaria Territoriale Santi Paolo and Carlo Hospital Via A di Rudinì, 8 - Via Pio II, 3 - 20100 Milano, ITALY.

Facial ArterioVenous Malformations (AVM) are rare lesions and present great difficulty in their diagnosis and treatment. We report a case of a 24-year-old male who has been diagnosed a right facial AVM that underwent endovascular embolization with a liquid embolic device and consequently surgical resection. The type of liquid embolic device used has given advantage for both treatment techniques. Read More

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Initial experience with the Scepter Mini dual-lumen balloon for transophthalmic artery embolization of anterior cranial fossa dural arteriovenous fistulae.

J Neurointerv Surg 2020 May 20. Epub 2020 May 20.

Radiology, Neuroadiology and Neurointervention Division, Stanford University School of Medicine, Stanford, California, USA

Background: Precise delivery of liquid embolic agents (LEAs) remains a challenge in the endovascular treatment of dural arteriovenous fistulae (dAVFs) and cerebral arteriovenous malformations (cAVMs). Despite significant advances in the past decade, LEA reflux and catheter navigability remain shortcomings of current endovascular technology, particularly in small and tortuous arteries. The Scepter Mini dual-lumen balloon microcatheter aims to address these issues by decreasing the distal catheter profile (1. Read More

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http://dx.doi.org/10.1136/neurintsurg-2020-016013DOI Listing

An Update on Medications for Brain Arteriovenous Malformations.

Neurosurgery 2020 May 20. Epub 2020 May 20.

Department of Neurological Surgery, University of California, San Francisco, San Francisco, California.

Despite a variety of treatment options for brain arteriovenous malformations (bAVMs), many lesions remain challenging to treat and present significant ongoing risk for hemorrhage. In Vitro investigations have recently led to a greater understanding of the formation, growth, and rupture of bAVMs. This has, in turn, led to the development of therapeutic targets for medications for bAVMs, some of which have begun testing in clinical trials in humans. Read More

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http://dx.doi.org/10.1093/neuros/nyaa192DOI Listing
May 2020
3.620 Impact Factor

SECg Staging System: A New Approach to the Management of Arteriovenous Malformations of the Head and Neck.

J Craniofac Surg 2020 May 19. Epub 2020 May 19.

Lenox Hill Hospital, New York, NY.

Objectives: Arteriovenous malformations (AVM) are the most troublesome vascular malformations to deal with. They tend to behave like low-grade malignancies with infiltrative and disruptive growth. Crucially, the clinical course of an AVM that has been improperly managed is usually characterized by a recurrence that is much more aggressive than the original disease. Read More

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http://dx.doi.org/10.1097/SCS.0000000000006446DOI Listing

Risk Assessment by Presurgical Tractography Using Navigated TMS Maps in Patients with Highly Motor- or Language-Eloquent Brain Tumors.

Cancers (Basel) 2020 May 17;12(5). Epub 2020 May 17.

Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.

Patients with functionally eloquent brain lesions are at risk of functional decline in the course of resection. Given tumor-related plastic reshaping and reallocation of function, individual data are needed for patient counseling and risk assessment prior to surgery. This study evaluates the utility of mapping by navigated transcranial magnetic stimulation (nTMS) and nTMS-based diffusion tensor imaging fiber tracking (DTI FT) for individual risk evaluation of surgery-related decline of motor or language function in the clinical setting. Read More

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http://dx.doi.org/10.3390/cancers12051264DOI Listing

Radiosurgery for Cerebral Arteriovenous Malformation (AVM) : Current Treatment Strategy and Radiosurgical Technique for Large Cerebral AVM : Review Article.

J Korean Neurosurg Soc 2020 May 20. Epub 2020 May 20.

Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Arteriovenous malformations (AVMs) are congenital anomalies of the cerebrovascular system. AVM harbors 2.2% annual hemorrhage risk in unruptured cases and 4. Read More

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http://dx.doi.org/10.3340/jkns.2020.0008DOI Listing

Neuroangiography: Review of Anatomy, Periprocedural Management, Technique, and Tips.

Semin Intervent Radiol 2020 Jun 14;37(2):166-174. Epub 2020 May 14.

Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado.

Neuroangiography (NA) is a minimally invasive procedure used to diagnose patients with neurovascular diseases. Noninvasive imaging has improved dramatically in recent years and is utilized more frequently; however, further evaluation with NA is still required in certain cases. NA indications include intracranial (cerebral aneurysms, arteriovenous malformations, dural arteriovenous fistula, cerebral vasculitis, cerebral vasospasm, ischemic stroke, nontraumatic subarachnoid hemorrhage, intracerebral hemorrhage, Moyamoya, vein of Galen malformation, intracranial tumors, and pseudotumor cerebri) and extracranial (internal and common carotid artery stenosis, vertebral artery stenosis, carotid artery blowout, vertebral artery blowout, epistaxis, oropharyngeal bleeding, and carotid body tumor) pathologies which can help with diagnosis and potential subsequent endovascular treatment. Read More

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http://dx.doi.org/10.1055/s-0040-1709171DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7224980PMC

Same day embolisation followed by microsurgical resection of brain arteriovenous malformations: a single centre early experience.

Br J Neurosurg 2020 May 18:1-4. Epub 2020 May 18.

Department of Neurosurgery, Hull Royal Infirmary Hospital, Hull, England.

The purpose of this paper is to report our experience of treating cerebral arteriovenous malformations (AVM) in adults with pre-operative embolisation and microsurgical resection on the same day during a single anaesthetic at a single centre between April 2016 and December 2018. We included both elective AVM and AVM that had bled acutely. We retrospectively analysed data from patients with cerebral AVMs who underwent embolisation followed by microsurgical resection on the same day at a single neurosurgical centre. Read More

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http://dx.doi.org/10.1080/02688697.2020.1765972DOI Listing

A three-dimensional color-printed system allowing complete modeling of arteriovenous malformations for surgical simulations.

J Clin Neurosci 2020 May 14. Epub 2020 May 14.

Department of Neurosurgery, Beijing Tian Tan Hospital,Capital Medical Univerisity, Beijing, China; Beijing Translational Engineering Enter for 3D printer in Clinical Neuroscience, Beijing, China; Department of Neurosurgery, Peking University International Hospital, Beijing, China.

To develope a colored realistic AVM model using three-dimensional (3D) printing for surgical planning and research. Raw computed tomography angiography (CTA) and magnetic resonance venography (MRV) data were integrated and used for reconstruction. Each AVM model included the nidus, the feeding arteries, the draining veins, the sinuses, the adjacent principal arteries, and the skull. Read More

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http://dx.doi.org/10.1016/j.jocn.2020.04.123DOI Listing

Characteristics and Outcomes Of Gastrointestinal Bleeding In Patients With Continuous-Flow Left Ventricular Assist Devices: A Systematic Review.

Artif Organs 2020 May 16. Epub 2020 May 16.

Gastrointestinal bleeding (GIB) is a common adverse event after continuous-flow left ventricular assist device (CF-LVAD) implantation. We sought to evaluate patterns of GIB development and related outcomes in CF-LVAD recipients. An electronic search was performed to identify all articles related to GIB in the setting of CF-LVAD implantation. Read More

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http://dx.doi.org/10.1111/aor.13725DOI Listing

Endovascular treatment of cerebellar arteriovenous malformations: A single-center experience of 75 consecutive patients.

Neurol India 2020 Mar-Apr;68(2):440-447

Department of Interventional Neuroradiology, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Qingzhou, Shandong, China.

Aim: We aimed to determine the safety and effectiveness of endovascular treatment for cerebellar arteriovenous malformations (AVMs).

Materials And Methods: Between January 2006 and January 2016, 75 patients with cerebellar AVMs underwent endovascular treatment at our department. The clinical and angiographic features, post-procedure complications, occlusion rate, and follow-up outcomes (modified Rankin Scale, mRS) of all the patients were retrospectively reviewed and collected. Read More

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http://dx.doi.org/10.4103/0028-3886.284347DOI Listing
May 2020
1.084 Impact Factor

Inline Balloon Occlusion-Assisted Delivery of Ethylene Vinyl Alcohol Copolymer for Peripheral Arterial Applications: A Multicenter Case Series.

J Vasc Interv Radiol 2020 Jun 12;31(6):986-992. Epub 2020 May 12.

Department of Radiology, University of Minnesota, Minneapolis, Minnesota.

Purpose: To assess the feasibility, safety, and efficacy of balloon-assisted delivery of ethylene vinyl alcohol copolymer (EVOH) for a range of peripheral arterial applications.

Materials And Methods: Six academic medical centers entered retrospective data on 46 consecutive patients (27 men, 19 women; ages, 11-94 y; mean age, 50.3 y) who underwent 60 balloon-assisted EVOH procedures. Read More

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http://dx.doi.org/10.1016/j.jvir.2020.01.005DOI Listing

Long-term outcomes of pediatric arteriovenous malformations: the 30-year Pittsburgh experience.

J Neurosurg Pediatr 2020 May 15:1-8. Epub 2020 May 15.

1Division of Neurological Surgery, Children's Hospital of Pittsburgh.

Objective: The study of pediatric arteriovenous malformations (pAVMs) is complicated by the rarity of the entity. Treatment choice has often been affected by the availability of different modalities and the experience of the providers present. The University of Pittsburgh experience of multimodality treatment of pAVMs is presented. Read More

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http://dx.doi.org/10.3171/2020.3.PEDS19614DOI Listing

Clinical and radiographic adverse events after Gamma Knife radiosurgery for brainstem lesions: A dosimetric analysis.

Radiother Oncol 2020 May 13;147:200-209. Epub 2020 May 13.

Department of Neurosurgery, University of Virginia, Charlottesville, USA.

Objectives: To analyze the association between dosvolume relationships and adverse events in brainstem lesions treated with Gamma Knife radiosurgery (GKRS).

Methods: Treatment plans were generated on BrainLab Elements and GammaPlan software. Dosimetric data were analyzed as continuous variables for patients who received GKRS to brain metastases or arteriovenous malformations (AVM) within or abutting the brainstem. Read More

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http://dx.doi.org/10.1016/j.radonc.2020.05.010DOI Listing

[Molecular mechanisms of growth and recurrence of cerebral arteriovenous malformations: part 2 (our own research)].

Zh Vopr Neirokhir Im N N Burdenko 2020 ;84(2):35-41

A.L. Polenov Russian Research Neurosurgical Institute - branch of V.A. Almazov National Medical Research Center, Saint Petersburg, Russia.

Background: Cerebral arteriovenous malformations (AVM) are not static congenital formations. These structures can grow, recur, and even appear de novo after a "complete" cure.

Objective: To analyze the dynamics of angiogenic factors before and after embolization of cerebral AVMs. Read More

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http://dx.doi.org/10.17116/neiro20208402135DOI Listing
January 2020

[Arteriovenous malformations of the brain in children: treatment results for 376 patients].

Zh Vopr Neirokhir Im N N Burdenko 2020 ;84(2):22-34

I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.

Undefined: Cerebral arteriovenous malformations (AVM) are increasingly detected in children.

Objective: To estimate the risk of hemorrhage in children with AVM before and after treatment and evaluate the outcomes of various methods of AVM management in children.

Material And Methods: This study included 376 patients with various cerebral AVM under the age of 18 years. Read More

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http://dx.doi.org/10.17116/neiro20208402122DOI Listing
January 2020

Updates in the management of cranial dural arteriovenous fistula.

Stroke Vasc Neurol 2020 21;5(1):50-58. Epub 2019 Nov 21.

Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA.

Dural arteriovenous fistula (dAVF) accounts for approximately 10% of all intracranial vascular malformations. While they can be benign lesions, the presence of retrograde venous drainage and cortical venous reflux makes the natural course of these lesions aggressive high risk of haemorrhage, neurological injury and mortality. Endovascular treatment is often the first line of treatment for dAVF. Read More

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http://dx.doi.org/10.1136/svn-2019-000269DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7213517PMC
November 2019

Updates in arteriovenous malformation management: the post-ARUBA era.

Stroke Vasc Neurol 2020 21;5(1):34-39. Epub 2019 Sep 21.

Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.

Brain arteriovenous malformations (AVMs) are complex and heterogeneous lesions that can rupture, causing significant morbidity and mortality. While ruptured lesions are usually treated, the management of unruptured AVMs remains unclear. A Randomized trial of Unruptured Brain Arteriovenous Malformations (ARUBA) was the first trial conducted to compare the effects of medical and interventional therapy. Read More

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http://dx.doi.org/10.1136/svn-2019-000248DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7213498PMC
September 2019

Transradial access for diagnostic angiography and interventional neuroradiology procedures: A four-year single-center experience.

Interv Neuroradiol 2020 May 14:1591019920925711. Epub 2020 May 14.

Department of Interventional Neuroradiology, Hospital Universitari de Bellvitge, Fundació Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain.

Purpose: The objective of this study was to assess the efficacy and safety of transradial access for diagnostic angiography and interventional neuroradiology procedures.

Methods: This was a retrospective analysis of a single-center experience based on 225 patients attended between August 2015 and October 2019, in which transradial access was used for diagnostic angiography and endovascular interventions. Ultrasound-guided access was done at the level of the forearm or anatomical or snuffbox (distal transradial access). Read More

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http://dx.doi.org/10.1177/1591019920925711DOI Listing

Histopathology of brain AVMs part I: microhemorrhages and changes in the nidal vessels.

Acta Neurochir (Wien) 2020 May 12. Epub 2020 May 12.

Hemorrhagic Brain Pathology Research Group, NeuroCenter, Kuopio University Hospital, Kuopio, Finland.

Background: Arteriovenous malformations of the brain (bAVM) may rupture from aneurysms or ectasias of the feeding, draining, or nidal vessels. Moreover, they may rupture from the immature, fragile nidal vessels that are characteristic to bAVMs. How the histopathological changes of the nidal vessels associate with clinical presentation and hemorrhage of the lesion is not well known. Read More

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http://dx.doi.org/10.1007/s00701-020-04391-wDOI Listing

Hepatic vein blood increases lung microvascular angiogenesis and endothelial cell survival - towards an understanding of univentricular circulation.

Semin Thorac Cardiovasc Surg 2020 May 7. Epub 2020 May 7.

Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Children's Hospital of Wisconsin, 9000 West Wisconsin Avenue, Milwaukee, WI 53226; Department of Obstetrics and Gynecology, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI 53226.

Objective: To improve our understanding of pulmonary arteriovenous malformations in univentricular congenital heart disease, our objective was to identify the effects of hepatic vein and superior vena cava constituents on lung microvascular endothelial cells independent of blood flow.

Methods: Paired blood samples were collected from the hepatic vein and superior vena cava in children 0-10 years-old undergoing cardiac catheterization. Isolated serum was subsequently used for in vitro endothelial cell assays. Read More

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http://dx.doi.org/10.1053/j.semtcvs.2020.03.004DOI Listing

Comparison of MRI, MRA, and DSA for Detection of Cerebral Arteriovenous Malformations in Hereditary Hemorrhagic Telangiectasia.

AJNR Am J Neuroradiol 2020 May 7. Epub 2020 May 7.

Division of Neurointerventional Radiology (D.L.C., M.R.A., D.E.L., S.W.H.)

Background And Purpose: Patients with hereditary hemorrhagic telangiectasia (HHT) have a high prevalence of brain vascular malformations, putting them at risk for brain hemorrhage and other complications. Our aim was to evaluate the relative utility of MR imaging and MRA compared with DSA in detecting cerebral AVMs in the HHT population.

Materials And Methods: Of 343 consecutive patients evaluated at the University of California, San Francisco HTT Center of Excellence, 63 met the study inclusion criteria: definite or probable hereditary hemorrhagic telangiectasia defined by meeting at least 2 Curacao criteria or positive genetic testing, as well as having at least 1 brain MR imaging and 1 DSA. Read More

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http://dx.doi.org/10.3174/ajnr.A6549DOI Listing

Treatment options and long-term outcomes in pediatric spinal cord vascular malformations: a case report and review of the literature.

Childs Nerv Syst 2020 May 6. Epub 2020 May 6.

New Jersey Pediatric Neuroscience Institute, 131 Madison Avenue, Morristown, NJ, 07960, USA.

A 16-month-old female was admitted for prolonged fever, gait ataxia, and neurogenic bowel and bladder. Neurological exam was significant for decreased sensory and motor functions in bilateral lower extremities. Initial MRI showed a thoracic spine hematoma and diagnostic angiogram revealed a large AVM and aneurysm. Read More

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http://dx.doi.org/10.1007/s00381-020-04624-4DOI Listing

A rare case of acute congestive ischaemic colitis related to combined superior and inferior mesenteric arteriovenous malformations.

J Surg Case Rep 2020 Apr 30;2020(4):rjaa083. Epub 2020 Apr 30.

Department of Colorectal Surgery, Royal Surrey County Hospital, Guildford, UK.

Visceral arteriovenous malformations (AVMs) are extremely rare with only a few cases described within the literature. To date, no cases of ischaemic colitis related to arteriovenous malformations affecting both superior and inferior mesenteric arteries have been reported. We report the first case of acute ischaemic colitis caused by venous congestion and reduced arterial flow due to combined AVMs in the territory of superior and inferior mesenteric arteries in a 51-year-old patient. Read More

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http://dx.doi.org/10.1093/jscr/rjaa083DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7193457PMC

The intracranial vasculature of canines represents a model for neurovascular ischemia and training residents and fellows in endovascular neurosurgery.

Neuroradiol J 2020 May 5:1971400920920787. Epub 2020 May 5.

New Era Stroke Care and Research Institute, The PLA Rocket Force General Hospital, Beijing, China.

Background: We describe use of a canine model to evaluate physiological effects and neuroprotective strategies in the setting of cerebral ischemia and endovascular neurosurgery training.

Methods: We performed transfemoral digital subtraction cerebral and cervical angiography on eight anesthetized dogs. Angiographic images of cerebral arteries were obtained following cannulation of the femoral artery. Read More

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http://dx.doi.org/10.1177/1971400920920787DOI Listing

Ruptured Arteriovenous Malformation Anterior to the Brainstem to a Child with Subsequent Spontaneous Thrombosis: Case Report and Literature Review.

Am J Case Rep 2020 May 1;21:e923289. Epub 2020 May 1.

Department of Neurosurgery, Pediatric Hospital of Athens, Agia Sophia, Athens, Greece.

BACKGROUND Cerebral arteriovenous malformations (AVMs) are considered to be abnormalities of congenital origin, presumably arising due to a disorder in the process of embryogenesis, in the phase of differentiation of premature vascular domes into mature arteries, capillaries, and veins. The end result of that process is the formation of direct arteriovenous communications, without intervening capillary beds. CASE REPORT We report the case of a 6-year-old female who suffered an abrupt deterioration of her level of consciousness due to a subarachnoid hemorrhage located in the basal cisterns. Read More

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http://dx.doi.org/10.12659/AJCR.923289DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7213815PMC

Short- and mid-term effects of covered stent implantation on extremity findings and heart failure in Parkes Weber syndrome: a case report.

Eur Heart J Case Rep 2020 Apr 10;4(2):1-4. Epub 2020 Mar 10.

Department of Cardiovascular Surgery, Medicalpark Karadeniz Hospital, Trabzon, Turkey.

Background : Parkes Weber syndrome (PWS) is a congenital disease characterized by vascular malformations, such as arteriovenous fistulas (AVFs). It frequently presents with overgrowth of a lower limb and high-output heart failure. The main treatment is to close vascular malformations. Read More

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http://dx.doi.org/10.1093/ehjcr/ytaa046DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7180698PMC

Detection of Occult Arteriovenous Malformation With Annular Array Ultrasonography.

Ophthalmic Surg Lasers Imaging Retina 2020 Apr;51(4):239-243

Retinal vascular tortuosity may occur in a wide range of ocular disorders. When retinal vascular tortuosity involves both arteries and veins, and presents unilaterally and without hemorrhage, a diagnosis of Wyburn Mason syndrome (WMS) should be considered due to the potential morbidity and mortality associated with cerebral involvement. Magnetic resonance imaging (MRI) and MRI angiography (MRA) are important tools for identifying cerebral arteriovenous malformations (AVMs), but these imaging modalities have limited spatial resolution to detect very small vascular lesions. Read More

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http://dx.doi.org/10.3928/23258160-20200326-06DOI Listing

A case of Cowden's syndrome with 15 spinal arteriovenous fistulas.

World Neurosurg 2020 Apr 25. Epub 2020 Apr 25.

Division of Interventional Neuroradiology, The Johns Hopkins Hospital, Baltimore, Maryland, USA.

Background: Spinal vascular malformations (SVM) are rarely multiple: less than 50 observations have so far been documented, with a maximum of 4 coexisting lesions per patient, always restricted to a single vertebral region (e.g., cervical or thoracic). Read More

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http://dx.doi.org/10.1016/j.wneu.2020.04.086DOI Listing

Identification of a Novel ACVRL1 Gene Mutation (c.100T>A, p.Cys34Ser) in a Japanese Patient with Possible Hereditary Hemorrhagic Telangiectasia (Osler-Weber-Rendu Disease).

Acta Med Okayama 2020 Apr;74(2):165-169

Division of Laboratory Medicine, Department of Pathology and Microbiology, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan.

Hereditary hemorrhagic telangiectasia (HHT; also known as Osler-Weber-Rendu disease) is an autosomal dominant genetic disorder that causes frequent epistaxis, mucocutaneous telangiectasia, and visceral arteriovenous malformations. Four genes (ENG, ACVRL1, SMAD4, and GDF2) have been identified as pathogenic in HHT. We describe the case of a 50-year-old Japanese man highly suspected of having HHT due to recurrent epistaxis, mucocutaneous telangiectasia, and a family history. Read More

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http://dx.doi.org/10.18926/AMO/58276DOI Listing

Intracranial Gorgon: Surgical Case Report of a Large Calcified Brain Arteriovenous Malformation.

Am J Case Rep 2020 Apr 28;21:e922872. Epub 2020 Apr 28.

MEDFUTURE Research Center for Advanced Medicine, Cluj-Napoca, Romania.

BACKGROUND Brain arteriovenous malformations (AVMs) are benign intracranial vascular anomalies that, under certain circumstances, may become life-threatening. Diffuse calcifications found in the vessel walls, interposing tissue or adjacent cerebral parenchyma are not uncommon, however, intense calcifications of AVMs that render them into veritable "brain stones" are scarcely reported in the literature and a genuine neurosurgical nightmare. CASE REPORT A 55 years-old male patient lacking any personal history of serious morbidities or surgical interventions was referred to our department for several epileptic seizures and severe chronic headache in the parieto-occipital region. Read More

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http://dx.doi.org/10.12659/AJCR.922872DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200094PMC

Interhemispheric Surgical Approaches for Ruptured Intraventricular Arteriovenous Malformation-Associated Aneurysms: Technical Report and Case Series.

World Neurosurg 2020 Apr 25. Epub 2020 Apr 25.

Department of Neurological Surgery, University of California, San Francisco, California, USA. Electronic address:

Background: Aneurysms associated with brain arteriovenous malformations (AVMs) represent a hemorrhage risk in addition to that of the AVM nidus. In high-risk or unresectable cases, targeted treatment of an aneurysm causing hemorrhage may effectively decrease future hemorrhage risk. The objective of this report is to describe our series of patients with intraventricular AVM-associated aneurysms treated surgically. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.04.066DOI Listing
April 2020
2.417 Impact Factor

Impact of flow and angioarchitecture on brain arteriovenous malformation outcome after gamma knife radiosurgery: the role of hemodynamics and morphology in obliteration.

Acta Neurochir (Wien) 2020 Apr 26. Epub 2020 Apr 26.

Department of Neurosurgery and Gamma Knife Radiosurgery, San Raffaele Scientific Institute, Vita-Salute University, Via Olgettina 60, 20132, Milan, Italy.

Background: Few studies have evaluated the relationship between brain arteriovenous malformations (bAVMs) angioarchitecture and the response to Gamma Knife Stereotactic Radiosurgery (GKSR).

Methods: A prospectively enrolled single-center cohort of patients with bAVMs treated by GKSR has been studied to define independent predictors of obliteration with particular attention to angioarchitectural variables. Only patients older than 18 years old (y. Read More

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http://dx.doi.org/10.1007/s00701-020-04351-4DOI Listing

Cerebral vascular malformations and their imaging modalities.

Neurol Sci 2020 Apr 25. Epub 2020 Apr 25.

Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.

Cerebrovascular malformations are uncommon diverse group of dysmorphic vascular communications that may occur sporadically or as part of genetic syndromes. These include non-neoplastic lesions such as arteriovenous malformations (AVM), cavernous malformations (CM), developmental venous anomalies (DVA), and telangiectasias as well as others like arteriovenous fistulas (AVF), vein of Galen malformations (VOGM), and mixed or unclassified angiomas. These lesions often carry a high degree of morbidity and mortality often requiring surgical or endovascular interventions. Read More

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http://dx.doi.org/10.1007/s10072-020-04415-4DOI Listing

De novo thalamic arteriovenous malformation in a boy with a brainstem cavernous malformation.

J Clin Neurosci 2020 Apr 21. Epub 2020 Apr 21.

Departments of Neurosurgery, University of Texas Health Science Center at Houston, Houston, TX, United States. Electronic address:

Brain arteriovenous malformations (bAVMs) have long been considered to be congenital, developing between the third and eighth weeks of embryogenesis. However, cases reporting their de novo formation suggest that these lesions can develop after birth and have challenged this concept. We present a case of a 6-year-old boy with a history of a brainstem cavernous malformation diagnosed after birth who later developed a de novo bAVM. Read More

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http://dx.doi.org/10.1016/j.jocn.2020.04.073DOI Listing

Microsurgical versus endovascular treatment of spinal epidural arteriovenous fistulas with intradural venous drainage: a multicenter study of 81 patients.

J Neurosurg Spine 2020 Apr 24:1-11. Epub 2020 Apr 24.

8Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Tokyo.

Objective: Spinal arteriovenous shunts are rare vascular lesions and are classified into 4 types (types I-IV). Due to rapid advances in neuroimaging, spinal epidural AVFs (edAVFs), which are similar to type I spinal dural AVFs (dAVFs), have recently been increasingly reported. These 2 entities have several important differences that influence the treatment strategy selected. Read More

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http://dx.doi.org/10.3171/2020.2.SPINE191432DOI Listing

Sinus Pericranii Complicated by Hydrocephalus: Case Report and Literature Review.

World Neurosurg 2020 Apr 21;139:238-241. Epub 2020 Apr 21.

Department of Neurosurgery, College of Medicine, King Saud University Medical City, Riyadh, Saudi Arabia; Neurosurgery Department, Stanford University, Stanford, California, USA.

Background: Sinus pericranii (SP) is a rare vascular condition that results when abnormal communication between the intracranial and extracranial venous systems is present. Here we report a rare case of hydrocephalus revealed through a SP scalp mass with a review of literature.

Case Description: A 13-year-old girl presented with a history of bulging left eye, bilateral gradual deterioration of vision, nausea, and progressive headaches. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.04.081DOI Listing