Progressive Gait Dysfunction

2016 ◽  
Author(s):  
Ji Y. Chong ◽  
Michael P. Lerario
Keyword(s):  
Arteriovenous Malformations ◽  
Vascular Malformations ◽  
Endovascular Embolization ◽  
Arteriovenous Fistulas ◽  
Progressive Myelopathy ◽  
Spinal Vascular Malformations ◽  
Gait Dysfunction ◽  
Dural Arteriovenous Fistulas ◽  
Neurological Change ◽  
Spinal Arteriovenous Malformations

Spinal vascular malformations are rare, with dural arteriovenous fistulas (AVFs) accounting for the majority of the pathology. Unlike spinal arteriovenous malformations, which cause abrupt neurological change as a result of hemorrhage, spinal dural AVFs tend to result in a progressive myelopathy through venous congestion and cord edema. If diagnosed and treated early with endovascular embolization or microsurgery, some deficits may be reversible.

scholarly journals Rare association between spinal dural arteriovenous fistulas and dysraphisms: Report of two cases and review of the literature with a focus on pitfalls in diagnosis and treatment

2017 ◽  
Vol 23 (5) ◽  
pp. 458-464 ◽  
Author(s):  
Giacomo Talenti ◽  
Giovanni Vitale ◽  
Giacomo Cester ◽  
Alessandro Della Puppa ◽  
Roberto Faggin ◽  
...  
Keyword(s):  
Arteriovenous Malformations ◽  
Vascular Malformations ◽  
Diagnosis And Treatment ◽  
Review Of The Literature ◽  
Arteriovenous Fistulas ◽  
Rare Association ◽  
Spinal Vascular Malformations ◽  
Dural Arteriovenous Fistulas ◽  
Spinal Arteriovenous Malformations ◽  
Spinal Dural Arteriovenous Fistulas

Spinal vascular malformations are uncommon yet important spinal pathologies commonly classified in congenital and acquired lesions. Spinal lipomas consist of three subtypes: intramedullary lipomas, lipomyelo(meningo)celes and lipomas of the filum. Although the association of spinal arteriovenous malformations (AVM) with other congenital anomalies is well known, the coexistence of dural arteriovenous fistulas (AVF) and tethered spinal cord is exceptionally rare and only eight cases have been reported. We present two cases from our institution and speculate on the possible origin of such a rare but insidious association. We review the current literature with a focus on possible pitfalls in diagnosis and treatment.

scholarly journals Endovascular management of spinal dural arteriovenous fistulas

2009 ◽  
Vol 26 (5) ◽  
pp. E15 ◽  
Author(s):  
Walavan Sivakumar ◽  
Gabriel Zada ◽  
Parham Yashar ◽  
Steven L. Giannotta ◽  
George Teitelbaum ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Vascular Malformations ◽  
Endovascular Embolization ◽  
Embolic Agent ◽  
Endovascular Management ◽  
Arteriovenous Fistulas ◽  
Spinal Vascular Malformations ◽  
Embolic Agents ◽  
Dural Arteriovenous Fistulas ◽  
Spinal Dural Arteriovenous Fistulas

Object Spinal dural arteriovenous fistulas (DAVFs) are the most common spinal vascular malformations and can be a significant cause of myelopathy, yet remain inefficiently diagnosed lesions. Over the last several decades, the treatment of spinal DAVFs has improved tremendously due to improvements in neuroimaging, microsurgical, and endovascular techniques. The aim of this paper was to review the existing literature regarding the clinical characteristics, classification, and endovascular management of spinal DAVFs. Methods A search of the PubMed database from the National Library of Medicine and reference lists of all relevant articles was conducted to identify all studies pertaining to spinal DAVFs, spinal dural fistulas, and spinal vascular malformations, with particular attention to endovascular management and outcomes. Results The ability to definitively treat spinal DAVFs using endovascular embolization has significantly improved over the last several decades. Overall rates of definitive embolization of spinal DAVFs have ranged between 25 and 100%, depending in part on the embolic agent used and the use of variable stiffness microcatheters. The majority of recent studies in which N-butyl cyanoacrylate or other liquid embolic agents were used have reported success rates of 70–90%. Surgical treatment remains the definitive option in cases of failed embolization, repeated recanalization, or lesions not amenable to embolization. Clinical outcomes have been comparable to surgical treatment when the fistula and draining vein remain persistently occluded. Improvements in gait and motor function are more likely following successful treatment, whereas micturition symptoms are less likely to improve. Conclusions Endovascular embolization is an increasingly effective therapy in the treatment of spinal DAVFs, and can be used as a definitive intervention in the majority of patients that undergo modern endovascular intervention. A multidisciplinary approach to the treatment of these lesions is required, as surgery is required for refractory cases or those not amenable to embolization. Newer embolic agents, such as Onyx, hold significant promise for future therapy, yet long-term follow-up studies are required.

Spinal Dural Arteriovenous Fistula Presenting with Myelopathy

2019 ◽  
pp. 279-286
Author(s):  
Vinayak Narayan ◽  
Anil Nanda
Keyword(s):  
Spinal Cord ◽  
Arteriovenous Malformations ◽  
Dural Arteriovenous Fistula ◽  
Endovascular Embolization ◽  
Spinal Dural Arteriovenous Fistula ◽  
Arteriovenous Fistulas ◽  
Dural Arteriovenous Fistulas ◽  
Degenerative Spinal Disease ◽  
Spinal Arteriovenous Malformations ◽  
Spinal Dural Arteriovenous Fistulas

Abstract: Spinal dural arteriovenous fistulas are a rare cause of congestive myelopathy. Symptoms are insidious in onset and may be confused with degenerative spinal disease. MRI characteristically shows edema of the spinal cord with serpiginous flow voids that follow the surface of the spinal cord. Careful evaluation with spinal angiography is required to ensure accurate diagnosis. Spinal dural arteriovenous fistulas differ from spinal arteriovenous malformations in that most fistulas have only a single fistulous point without a nidus. Spinal dural arteriovenous fistulas may be treated successfully with either surgical resection or endovascular embolization depending on their anatomy. Earlier treatment is associated with better outcomes.

Concurrent spinal dural and intradural arteriovenous fistulas

2001 ◽  
Vol 95 (1) ◽  
pp. 96-99 ◽  
Author(s):  
Phong Dam-Hieu ◽  
Jean-François Mineo ◽  
Alionka Bostan ◽  
Michel Nonent ◽  
Gérard Besson
Keyword(s):  
Arteriovenous Malformations ◽  
Conus Medullaris ◽  
Spinal Angiography ◽  
Content Type ◽  
Arteriovenous Fistulas ◽  
Progressive Myelopathy ◽  
Type Iv ◽  
Dural Arteriovenous Fistulas ◽  
Spinal Arteriovenous Malformations ◽  
Spinal Avm

✓ Among spinal arteriovenous malformations (AVMs), dural arteriovenous fistulas (DAVFs) should be distinguished from intradural AVMs. The authors report the unusual and well-documented case of a 49-year-old man who suffered from a rapidly progressive myelopathy. Two concurrent spinal AVMs (one DAVF and one intradural direct AVF [Anson—Spetzler Type IV-B AVM]) were found located in the midthoracic region and in the conus medullaris, respectively. Both AVMs were successfully treated by surgery. To the authors' knowledge, the association of these two pathological entities has not been previously described. Clinically, if the patient fails to improve or deteriorates after the treatment of a spinal AVM, the presence of another AVM should be investigated by repeated angiography, especially if a complete spinal angiography study was not initially performed.

scholarly journals Glue, Onyx, Squid or PHIL? Liquid Embolic Agents for the Embolization of Cerebral Arteriovenous Malformations and Dural Arteriovenous Fistulas

2021 ◽  
Author(s):  
Dominik F. Vollherbst ◽  
René Chapot ◽  
Martin Bendszus ◽  
Markus A. Möhlenbruch
Keyword(s):  
Arteriovenous Malformations ◽  
Vascular Malformations ◽  
Endovascular Embolization ◽  
Embolic Agent ◽  
Cerebral Arteriovenous Malformations ◽  
Arteriovenous Fistulas ◽  
Advantages And Disadvantages ◽  
Embolic Agents ◽  
Liquid Embolic ◽  
Dural Arteriovenous Fistulas

Abstract Background Endovascular embolization is an effective treatment option for cerebral arteriovenous malformations (AVMs) and dural arteriovenous fistulas (DAVFs). A variety of liquid embolic agents have been and are currently used for embolization of AVMs and DAVFs. Knowledge of the special properties of the agent which is used is crucial for an effective and safe embolization procedure. Material and Methods This article describes the properties and indications of the liquid embolic agents which are currently available: cyanoacrylates (also called glues), and the copolymers Onyx, Squid and PHIL, as well as their respective subtypes. Results Cyanoacrylates were the predominantly used agents in the 1980s and 1990s. They are currently still used in specific situations, for example for the occlusion of macro-shunts, for the pressure cooker technique or in cases in which microcatheters are used that are not compatible with dimethyl-sulfoxide. The first broadly used copolymer-based embolic agent Onyx benefits from a large amount of available experience and data, which demonstrated its safety and efficacy in the treatment of cerebral vascular malformations, while its drawbacks include temporary loss of visibility during longer injections and artifacts in cross-sectional imaging. The more recently introduced agents Squid and PHIL aim to overcome these shortcomings and to improve the success rate of endovascular embolization. Novelties of these newer agents with potential advantages include extra-low viscosity versions, more stable visibility, and a lower degree of imaging artifacts. Conclusion All the available liquid embolic agents feature specific potential advantages and disadvantages over each other. The choice of the most appropriate embolic agent must be made based on the specific material characteristics of the agent, related to the specific anatomical characteristics of the target pathology.

Transvenous Approach to Intracranial Arteriovenous Malformations

Neurosurgery ◽  
2015 ◽  
Vol 77 (4) ◽  
pp. 644-652 ◽  
Author(s):  
Omar Choudhri ◽  
Michael E. Ivan ◽  
Michael T. Lawton
Keyword(s):  
Arteriovenous Malformations ◽  
Vascular Malformations ◽  
Venous Drainage ◽  
Endovascular Embolization ◽  
Intracranial Arteriovenous Malformations ◽  
Arteriovenous Fistulas ◽  
Treatment Models ◽  
Dural Arteriovenous Fistulas ◽  
Transvenous Approach ◽  
The Brain

Abstract A compartmental conceptualization of intracranial arteriovenous malformations (AVMs) allows recognition of feeding arteries, an intervening plexiform nidus, and draining veins. AVM therapy involves eliminating the nidus, which is the source of hemorrhage, without compromising normal arterial and venous drainage of the brain. Traditional methods of AVM therapy through microsurgery and endovascular embolization involve arterial devascularization, with preservation of AVM venous drainage, until the nidus is excluded. The transvenous approach in treating vascular malformations was popularized by successful treatment models for dural arteriovenous fistulas. More recently, high-flow intracranial AVMs are being managed with transvenous endovascular approaches, although this novel technique has its challenges and perils. We review the current literature on transvenous AVM therapy and highlight its role for AVM therapy in the present day.

scholarly journals Open and endovascular treatment of spinal dural arteriovenous fistulas: a 10-year experience

2017 ◽  
Vol 26 (4) ◽  
pp. 519-523 ◽  
Author(s):  
Matthew J. Koch ◽  
Christopher J. Stapleton ◽  
Pankaj K. Agarwalla ◽  
Collin Torok ◽  
John H. Shin ◽  
...  
Keyword(s):  
Vascular Malformations ◽  
Management Strategies ◽  
Case Series ◽  
Endovascular Embolization ◽  
Definitive Treatment ◽  
Type I ◽  
Arteriovenous Fistulas ◽  
Presenting Symptoms ◽  
Dural Arteriovenous Fistulas ◽  
Spinal Dural Arteriovenous Fistulas

OBJECTIVE Vascular malformations of the spine represent rare clinical entities with profound neurological implications. Previously reported studies on management strategies for spinal dural arteriovenous fistulas (sDAVFs) appeared before the advent of modern liquid embolic agents. Authors of the present study review their institutional experience with endovascularly and surgically treated sDAVFs. METHODS The authors performed a retrospective, observational, single-center case series on sDAVFs treated with endovascular embolization, microsurgical occlusion, or both between 2004 and 2013. The mode, efficacy, and clinical effect of treatment were evaluated. RESULTS Forty-seven patients with spinal arteriovenous malformations were evaluated using spinal angiography, which demonstrated 34 Type I sDAVFs (thoracic 20, lumbar 12, and cervical 2). Twenty-nine of the patients (85%) were male, and the median patient age was 63.3 years. Twenty patients underwent primary endovascular embolization (16 Onyx, 4 N-butyl cyanoacrylate [NBCA]), and 14 underwent primary surgical clipping. At a mean follow-up of 36 weeks, according to angiography or MR angiography, 5 patients treated with endovascular embolization demonstrated persistent arteriovenous shunting, whereas none of the surgically treated patients showed lesion persistence (p = 0.0237). Thirty patients (88%) experienced some resolution of their presenting symptoms (embolization 17 [85%], surgery 13 [93%], p = 1.00). CONCLUSIONS Microsurgical occlusion remains the most definitive treatment modality for sDAVFs, though modern endovascular techniques remain a viable option for the initial treatment of anatomically amenable lesions. Treatment of these lesions usually results in some clinical improvement.

Spinal dural arteriovenous fistula associated with a spinal perimedullary fistula

2006 ◽  
Vol 4 (3) ◽  
pp. 241-245 ◽  
Author(s):  
Timo Krings ◽  
Volker A. Coenen ◽  
Martin Weinzierl ◽  
Marcus H. T. Reinges ◽  
Michael Mull ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Arteriovenous Fistula ◽  
Dural Arteriovenous Fistula ◽  
Vascular Malformations ◽  
Venous Drainage ◽  
Elevated Pressure ◽  
Spinal Dural Arteriovenous Fistula ◽  
Arteriovenous Fistulas ◽  
Progressive Myelopathy ◽  
Dural Arteriovenous Fistulas

✓ Among spinal cord vascular malformations, dural arteriovenous fistulas (DAVFs) must be distinguished from intradural malformations. The concurrence of both is extremely rare. The authors report the case of a 35-year-old man who suffered from progressive myelopathy and who harbored both a DAVF and an intradural perimedullary fistula. During surgery, both fistulas were identified, confirmed, and subsequently obliterated. The fistulas were located at two levels directly adjacent to each other. Although the incidence of concurrent spinal DAVFs is presumed to be approximately 2%, the combination of a dural and an intradural fistula is exceedingly rare; only two other cases have been reported in the literature. One can speculate whether the alteration in venous drainage caused by the (presumably congenital) perimedullary fistula could possibly promote the production of a second dural fistula due to elevated pressure with concomitant venous stagnation and subsequent thrombosis. The authors conclude that despite the rarity of dual pathological entities, the clinician should be aware of the possibility of the concurrence of more than one spinal fistula in the same patient.

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