Spinal extradural arteriovenous fistulas

2013 ◽  
Vol 19 (5) ◽  
pp. 582-590 ◽  
Author(s):  
Wendy Huang ◽  
Bradley A. Gross ◽  
Rose Du
Keyword(s):  
Treatment Strategies ◽  
Venous Drainage ◽  
Neurofibromatosis Type ◽  
Venous Hypertension ◽  
High Rate ◽  
Treatment Modalities ◽  
Arteriovenous Fistulas ◽  
Pubmed Database ◽  
Complete Obliteration

Object Our understanding of spinal extradural arteriovenous fistulas (eAVFs) is relatively limited. In this study the authors aimed to provide the demographics, natural history, and treatment results of these rare lesions. Methods The authors performed a pooled analysis of data in the PubMed database through December 2012. Individualized patient data were extracted to elucidate demographic, clinical, and angioarchitectural features of spinal eAVFs as well as outcomes following different treatment strategies. Results Information on 101 patients was extracted from 63 eligible studies. The mean patient age was 45.9 years, and there was no significant overall sex predilection. Only 3% of the lesions were incidental, whereas 10% occurred in patients who had presented with hemorrhage. None of the 64 patients with at least 1 month of untreated follow-up sustained a hemorrhage over a total of 83.8 patient-years. Patients with lumbosacral eAVFs were significantly older (mean age 58.7 years, p < 0.0001), were significantly more often male (70% male, p = 0.02), had significantly worse presenting Aminoff-Logue motor and bladder scores (p = 0.0008 and < 0.0001, respectively), and had the greatest prevalence of lesions with intradural venous drainage (62% of cases, p < 0.0001). Neurofibromatosis Type 1 (30% of cases, p < 0.0001) and subarachnoid hemorrhage (9% of cases, p = 0.06) were associated with and exclusively found in patients with cervical eAVFs. The overall complete obliteration rate was 91%. After a mean follow-up of 1.7 years, the clinical condition was improved in 89% of patients, the same in 9%, and worse in 2%. Obliteration rates and outcome at follow-up did not significantly differ between surgical and endovascular treatment modalities. Conclusions Spinal eAVFs are rare lesions with a low risk of hemorrhage; they cause neurological morbidity as a result of mass effect and/or venous hypertension. Their treatment is associated with a high rate of complete obliteration and improvement in preoperative symptoms.

Clinical features and treatment outcomes of the spinal arteriovenous fistulas and malformations

2013 ◽  
Vol 19 (2) ◽  
pp. 207-216 ◽  
Author(s):  
Won-Sang Cho ◽  
Ki-Jeong Kim ◽  
O-Ki Kwon ◽  
Chi Heon Kim ◽  
Jiha Kim ◽  
...  
Keyword(s):  
Treatment Outcomes ◽  
Clinical Outcomes ◽  
Clinical Features ◽  
Vascular Diseases ◽  
Neurological Status ◽  
Treatment Modalities ◽  
Cure Rate ◽  
Arteriovenous Fistulas ◽  
Complete Obliteration

Object Spinal vascular diseases, such as spinal dural arteriovenous fistulas (DAVFs), perimedullary arteriovenous fistulas (AVFs), and spinal arteriovenous malformations (AVMs), are very rare. The authors analyzed the features and treatment outcomes of these conditions. Methods Data from 64 patients were retrospectively reviewed. There were 33 spinal DAVFs (1 patient had 2 lesions), 20 perimedullary AVFs, and 12 spinal AVMs. Clinical features, radiological findings, treatment results, and clinical outcomes were evaluated according to the diseases, subtypes, and treatment modalities. The median duration of follow-up was 20, 42, and 56 months for spinal DAVFs, perimedullary AVFs, and spinal AVMs, respectively. Results Spinal DAVFs showed faster progression of symptoms (median 5, 12, and 36 months for spinal DAVFs, perimedullary AVFs, and spinal AVMs, respectively) and worse neurological status at diagnosis (poor neurological status in 56%, 65%, and 33%, respectively). On MRI, signal voids were demonstrated in all except 1 spinal DAVF. At the last follow-up, 94% of spinal DAVFs, 68% of perimedullary AVFs, and 50% of spinal AVMs were completely obliterated. Favorable clinical outcomes were achieved in 91%, 95%, and 58%, respectively. In detail, the majority (78%) of spinal DAVFs were embolized, resulting in complete obliteration in 92% and favorable clinical outcomes in 92%. Most Type IVa and IVb perimedullary AVFs were surgically treated (71% and 88%), with complete obliterations of 86% and 71%, and favorable clinical outcomes in 100% and 86%, respectively. All Type IVc lesions were embolized with a low cure rate of 40%; however, clinical outcomes were satisfactory. Spinal AVMs were generally embolized (67%), and only glomus-type lesions attained a satisfactory cure rate (80%) and clinical outcome (100%). Conclusions Embolization produced satisfactory outcomes in spinal DAVFs and glomus-type spinal AVMs. Surgery is advantageous in Type IVa and IVb perimedullary AVFs. Palliative embolization can be effective in Type IVc perimedullary AVFs and juvenile spinal AVMs.

scholarly journals Gamma Knife surgery for clival epidural-osseous dural arteriovenous fistulas

2018 ◽  
Vol 128 (5) ◽  
pp. 1364-1371 ◽  
Author(s):  
Cheng-Chia Lee ◽  
Ching-Jen Chen ◽  
Shao-Ching Chen ◽  
Huai-Che Yang ◽  
Chung Jung Lin ◽  
...  
Keyword(s):  
Gamma Knife ◽  
Case Series ◽  
Latency Period ◽  
Venous Drainage ◽  
Symptomatic Improvement ◽  
Gamma Knife Surgery ◽  
Type I ◽  
Arteriovenous Fistulas ◽  
Complete Obliteration

OBJECTIVEClival epidural-osseous dural arteriovenous fistula (DAVF) is often associated with a large nidus, multiple arterial feeders, and complex venous drainage. In this study the authors report the outcomes of clival epidural-osseous DAVFs treated using Gamma Knife surgery (GKS).METHODSThirteen patients with 13 clival epidural-osseous DAVFs were treated with GKS at the authors’ institution between 1993 and 2015. Patient age at the time of GKS ranged from 38 to 76 years (median 55 years). Eight DAVFs were classified as Cognard Type I, 4 as Type IIa, and 1 as Type IIa+b. The median treatment volume was 17.6 cm3 (range 6.2–40.3 cm3). The median prescribed margin dose was 16.5 Gy (range 15–18 Gy). Clinical and radiological follow-ups were performed at 6-month intervals. Patient outcomes after GKS were categorized as 1) complete improvement, 2) partial improvement, 3) stationary, and 4) progression.RESULTSAll 13 patients demonstrated symptomatic improvement, and on catheter angiography 12 of the 13 patients had complete obliteration and 1 patient had partial obliteration. The median follow-up period was 26 months (range 14–186 months). The median latency period from GKS to obliteration was 21 months (range 8–186 months). There was no intracranial hemorrhage during the follow-up period, and no deaths occurred. Two adverse events were observed following treatment, and 2 patients required repeat GKS treatment with eventual complete obliteration.CONCLUSIONSGamma Knife surgery offers a safe and effective primary or adjuvant treatment modality for complex clival epidural-osseous DAVFs. All patients in this case series demonstrated symptomatic improvement, and almost all patients attained complete obliteration.

Cervical Perimedullary Arteriovenous Shunts

Neurosurgery ◽  
2014 ◽  
Vol 75 (3) ◽  
pp. 238-249 ◽  
Author(s):  
Toshiki Endo ◽  
Hiroaki Shimizu ◽  
Kenichi Sato ◽  
Kuniyasu Niizuma ◽  
Ryushi Kondo ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Anterior Approach ◽  
Open Surgery ◽  
Treatment Strategies ◽  
Good Recovery ◽  
Intraoperative Angiography ◽  
Indocyanine Green Videoangiography ◽  
Arteriovenous Shunts ◽  
Complete Obliteration

Abstract BACKGROUND: Reports of cervical perimedullary arteriovenous shunt (PMAVS) are limited, and treatment strategies have not been established. OBJECTIVE: To describe angioarchitecture and optimal treatment strategies for cervical PMAVS. METHODS: We treated 22 patients with cervical PMAVS between 2000 and 2012 (8 women and 14 men; age, 9-80 years). According to the classification, our patients included type IVa (4 patients), type IVb (16 patients), and type IVc (2 patients). Seventeen patients presented with subarachnoid hemorrhage. RESULTS: A total of 41 shunting points were localized in 22 patients, of which 34 points were located ventral or ventrolateral to the spinal cord. The anterior spinal artery (ASA) contributed to the shunts in 16 patients. Aneurysm formation was identified in 8 patients. Endovascular treatment was attempted in 3 patients, resulting in complete obliteration in 1 patient (type IVc). Overall, 21 patients underwent open surgery. An anterior approach with corpectomy was elected for 2 patients; the other 19 patients underwent the posterior approaches using indocyanine green videoangiography, intraoperative angiography, endoscopy (8 patients), and neuromonitoring. Twenty patients were rated as having a good recovery at 6 months after surgery. No recurrence was observed in any patients during the follow-up (mean, 59.7 months). CONCLUSION: Shunting points of the cervical PMAVS were predominantly located ventral or ventrolateral to the spinal cord and were often fed by the ASA. Even for ventral lesions, posterior exposure assisted with neuromonitoring and endoscopy, and intraoperative angiography provided a view sufficient to understand the relationships between the shunts and the ASA and contributed to good surgical outcomes.

Stent-assisted coil embolization followed by a stent-within-a-stent technique for ruptured dissecting aneurysms of the intracranial vertebrobasilar artery

2009 ◽  
Vol 111 (1) ◽  
pp. 48-52 ◽  
Author(s):  
Sang Hyun Suh ◽  
Byung Moon Kim ◽  
Sung Il Park ◽  
Dong Ik Kim ◽  
Yong Sam Shin ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Therapeutic Option ◽  
Direct Consequence ◽  
Treatment Method ◽  
Dissecting Aneurysm ◽  
High Rate ◽  
Parent Artery ◽  
Vertebrobasilar Artery ◽  
Complete Obliteration

Object A ruptured dissecting aneurysm of the vertebrobasilar artery (VBA-DA) is a well-known cause of acute subarachnoid hemorrhage (SAH) with a high rate of early rebleeding. Internal trapping of the parent artery, including the dissected segment, is one of the most reliable techniques to prevent rebleeding. However, for a ruptured VBA-DA not suitable for internal trapping, the optimal treatment method has not been well established. The authors describe their experience in treating ruptured VBA-DAs not amenable to internal trapping of the parent artery with stent-assisted coil embolization (SAC) followed by a stent-within-a-stent (SWS) technique. Methods Eleven patients—6 men and 5 women with a mean age of 48 years and each with a ruptured VBA-DA not amenable to internal trapping of the parent artery—underwent an SAC-SWS between November 2005 and October 2007. The feasibility and clinical and angiographic outcomes of this combined procedure were retrospectively evaluated. Results The SAC-SWS was successful without any treatment-related complications in all 11 patients. Immediate posttreatment angiograms revealed complete obliteration of the DA sac in 3 patients, near-complete obliteration in 7, and partial obliteration in 1. One patient died as a direct consequence of the initial SAH. All 10 surviving patients had excellent clinical outcomes (Glasgow Outcome Scale Score 5) without posttreatment rebleeding during a follow-up period of 8–24 months (mean follow-up 15 months). Angiographic follow-up at 6–12 months after treatment was possible at least once in all surviving patients. Nine VBA-DAs showed complete obliteration; the other aneurysm, which had appeared partially obliterated immediately after treatment, demonstrated progressive obliteration on 2 consecutive follow-up angiography studies. There was no in-stent stenosis or occlusion of the branch or perforating vessels. Conclusions The SAC-SWS technique seems to be a feasible and effective reconstructive treatment option for a ruptured VBA-DA. The technique may be considered as an alternative therapeutic option in selected patients with ruptured VBA-DAs unsuitable for internal trapping of the parent artery.

Advances in Surgical Approaches to Dural Fistulas

Neurosurgery ◽  
2014 ◽  
Vol 74 (suppl_1) ◽  
pp. S32-S41 ◽  
Author(s):  
Patrick P. Youssef ◽  
Albert Jess Schuette ◽  
C. Michael Cawley ◽  
Daniel L. Barrow
Keyword(s):  
Treatment Options ◽  
Venous Drainage ◽  
Venous Hypertension ◽  
Surgical Approaches ◽  
Dural Sinus ◽  
Intraoperative Angiography ◽  
Indocyanine Green Videoangiography ◽  
Arteriovenous Fistulas ◽  
The Past ◽  
Dural Arteriovenous Fistulas

Abstract Dural arteriovenous fistulas are abnormal connections of dural arteries to dural veins or venous sinuses originating from within the dural leaflets. They are usually located near or within the wall of a dural venous sinus that is frequently obstructed or stenosed. The dural fistula sac is contained within the dural leaflets, and drainage can be via a dural sinus or retrograde through cortical veins (leptomeningeal drainage). Dural arteriovenous fistulas can occur at any dural sinus but are found most frequently at the cavernous or transverse sinus. Leptomeningeal venous drainage can lead to venous hypertension and intracranial hemorrhage. The various treatment options include transarterial and transvenous embolization, stereotactic radiosurgery, and open surgery. Although many of the advances in dural arteriovenous fistula treatment have occurred in the endovascular arena, open microsurgical advances in the past decade have primarily been in the tools available to the surgeon. Improvements in microsurgical and skull base approaches have allowed surgeons to approach and obliterate fistulas with little or no retraction of the brain. Image-guided systems have also allowed better localization and more efficient approaches. A better understanding of the need to simply obliterate the venous drainage at the site of the fistula has eliminated the riskier resections of the past. Finally, the use of intraoperative angiography or indocyanine green videoangiography confirms the complete disconnection of fistula while the patient is still on the operating room table, preventing reoperation for residual fistulas.

A variant of arteriovenous fistulas within the wall of dural sinuses. Results of combined surgical and endovascular therapy

1991 ◽  
Vol 74 (2) ◽  
pp. 199-204 ◽  
Author(s):  
Stanley L. Barnwell ◽  
Van V. Halbach ◽  
Christopher F. Dowd ◽  
Randall T. Higashida ◽  
Grant B. Hieshima ◽  
...  
Keyword(s):  
Venous Drainage ◽  
Venous Hypertension ◽  
Neurological Dysfunction ◽  
Dural Sinus ◽  
Unique Type ◽  
Content Type ◽  
Av Fistula ◽  
Arteriovenous Fistulas ◽  
Av Fistulas ◽  
Cortical Venous Drainage

✓ Dural arteriovenous (AV) fistulas are thought to be acquired lesions that form in an area of thrombosis within a sinus. If the sinus remains completely thrombosed, venous drainage from these lesions occurs through cortical veins, or, if the sinus is open, venous drainage is usually into the involved sinus. Among 105 patients with dural A V fistulas evaluated over the the past 5 years, seven had a unique type of dural AV fistula in the superior sagittal, transverse, or straight sinus in which only cortical venous drainage occurred despite a patent involved sinus; the fistula was located within the wall of a patent dural sinus, but outflow was not into the involved sinus. This variant of dural AV fistulas puts the patient at serious risk for hemorrhage or neurological dysfunction caused by venous hypertension. Three patients presented with hemorrhage, one with progressive neurological dysfunction, one with seizures, and two with bruit and headaches. A combination of surgical and endovascular techniques was used to close the fistula while preserving flow through the sinus.

scholarly journals Intracranial hemorrhage from dural arteriovenous fistulas: clinical features and outcome

2013 ◽  
Vol 34 (5) ◽  
pp. E15 ◽  
Author(s):  
David J. Daniels ◽  
Ananth K. Vellimana ◽  
Gregory J. Zipfel ◽  
Giuseppe Lanzino
Keyword(s):  
Clinical Features ◽  
Intracranial Hemorrhage ◽  
Case Series ◽  
Venous Drainage ◽  
Sudden Onset ◽  
Residual Symptoms ◽  
Arteriovenous Fistulas ◽  
Common Location ◽  
Dural Arteriovenous Fistulas

Object In this paper the authors' goal was to review the clinical features and outcome of patients with intracranial dural arteriovenous fistulas (DAVFs) who presented with hemorrhage. Methods A retrospective study of 28 patients with DAVFs who presented with intracranial hemorrhage to 2 separate institutions was performed. The information reviewed included clinical presentation, location and size of hemorrhage, angiographic features, treatment, and clinical and radiologically documented outcomes. Clinical and radiological follow-up were available in 27 of 28 patients (mean follow-up 17 months). Results The vast majority of patients were male (86%), and the most common presenting symptom was sudden-onset headache. All DAVFs had cortical venous drainage, and about one-third were associated with a venous varix. The most common location was tentorial (75%). Treatment ranged from endovascular (71%), surgical (43%), Gamma Knife surgery (4%), or a combination of modalities. The majority of fistulas (75%) were completely obliterated, and most patients experienced excellent clinical outcome (71%, modified Rankin Scale score of 0 or 1). There were no complications in this series. Conclusions Case series, including the current one, suggest that the vast majority of patients who present with intracranial hemorrhage from a DAVF are male. The most common location for DAVFs presenting with hemorrhage is tentorial. Excellent outcomes are achieved with individualized treatment, which includes various therapeutic strategies alone or in combination. Despite the hemorrhagic presentation, almost two-thirds of patients experience a full recovery with no or minimal residual symptoms.

Healthcare (HC) utilization and costs in patients (pts) with newly diagnosed metastatic thyroid cancer (mTC)

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 17082-17082 ◽  
Author(s):  
A. Berger ◽  
J. Edelsberg ◽  
K. Chung ◽  
A. Ngyuyen ◽  
D. Stepan ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Metastatic Disease ◽  
Index Date ◽  
Average Length ◽  
Treatment Strategies ◽  
Treatment Modalities ◽  
Newly Diagnosed ◽  
Office Visits ◽  
Antibody Testing

17082 Background: mTC is relatively rare and little is known about treatment patterns or HC costs in patients with newly diagnosed disease. Methods: Retrospective longitudinal cohort study. Using a large (∼14 million covered lives) US health-insurance claims database, we identified a cohort of pts with diagnoses of thyroid cancer (ICD-9-CM diagnosis codes 193.XX) and distant metastatic disease (197.XX-198.XX) between 1/1/2003 and 12/31/2005 (“study period”); the date of first mention of metastatic disease was designated the “index date”. All pts were required to be =18 years of age as of their index date and to have been continuously enrolled in the database for =6 months prior to this date. Pts were followed from their index date until health plan disenrollment (for any reason) or end of the study period, whichever occurred first. Utilization of HC services and costs (total reimbursed amount including pt liability) were then examined during each quarter of follow-up (eg, first 3 months of follow-up=Q1). Results: 183 pts met all study entry criteria. Mean (±SD) age was 51.5 (11.8) years; mean duration of follow-up was 344 days (median=275 days). Most common management/treatment strategies during Q1 included: imaging [eg, US/CT of the neck (49.7%)], thyroglobulin/thyroglobulin antibody testing (25.7%); radiation therapy (23.0%); I131 therapy (19.1%); thyroid surgery (12.6%); chemotherapy (10.9%); lymphadenectomy (8.7%); and bisphosphonate therapy (3.8%). In addition, during Q1, pts averaged 9.5 office visits (95% CI, 8.2, 10.9) and 0.6 hospitalizations (95% CI, 0.5, 0.7); for pts hospitalized during Q1, average length of stay was 6.6 (95% CI, 4.9, 8.4). Costs during the first 2 years of follow-up are presented in the table ; inpt care represented 43% of total HC costs. Conclusions: Many different treatment modalities are used in pts with newly diagnosed mTC; the cost of such care is substantial. [Table: see text] [Table: see text]

scholarly journals Multimodal treatment strategies for complex pediatric cerebral arteriovenous fistulas: contemporary case series at Barrow Neurological Institute

2015 ◽  
Vol 15 (6) ◽  
pp. 615-624 ◽  
Author(s):  
Hasan A. Zaidi ◽  
M. Yashar S. Kalani ◽  
Robert F. Spetzler ◽  
Cameron G. McDougall ◽  
Felipe C. Albuquerque
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Clinical Outcomes ◽  
Endovascular Therapy ◽  
Open Surgery ◽  
Treatment Strategies ◽  
Preoperative Imaging ◽  
Arteriovenous Fistulas ◽  
Surgeon Experience

OBJECT Pediatric cerebral arteriovenous fistulas (AVFs) are rare but potentially lethal vascular lesions. Management strategies for these lesions have undergone considerable evolution in the last decade with the advent of new endovascular, surgical, and radiosurgical technologies. This study sought to review current treatment strategies and long-term clinical outcomes at a high-volume cerebrovascular institute. METHODS A retrospective chart review was performed on patients with a diagnosis of cerebral AVF from 1999 to 2012. Patients with carotid-cavernous fistulas, vein of Galen malformations, and age > 18 years were excluded from final analysis. Medical history, surgical and nonsurgical treatment, and clinical outcomes were documented. Pre- and postoperative angiograms were analyzed to assess for obliteration of the fistula. RESULTS Seventeen patients with pial AVFs (29.4%), dural AVFs (64.7%), or mixed pial/dural AVFs (5.9%) were identified. The majority of lesions were paramedian (70.6%) and supratentorial (76.5%). The study population had a mean age of 6.4 years, with a slight male predominance (52.9%), and the most common presenting symptoms were seizures (23.5%), headaches (17.6%), congestive heart failure (11.7%), and enlarging head circumference (11.7%). Among patients who underwent intervention (n = 16), 56.3% were treated with endovascular therapy alone, 6.3% were treated with open surgery alone, and 37.5% required a multimodal approach. Overall, 93.8% of the treated patients received endovascular treatment, 43.8% received open surgery, and 12.5% received radiosurgery. Endovascular embolysates included Onyx (n = 5), N-butyl cyanoacrylate (NBCA; n = 4), or coil embolization (n = 7) with or without balloon assistance (n = 2). Complete angiographic obliteration was achieved in 87.5% at the last follow-up evaluation (mean follow-up 3.1 years). One infant with incomplete AVF obliteration died of congestive heart failure, and 1 patient with complete obliteration died of acute sinus thrombosis, with an overall complication rate of 18.8%. CONCLUSIONS Pediatric cerebral AVFs are challenging neurosurgical lesions. Although advancements in endovascular therapy in the last decade have greatly changed the natural course of this disease, a multidisciplinary approach remains necessary for a large subset of patients. Surgeon experience with a thorough analysis of preoperative imaging is paramount to achieving acceptable clinical outcomes.

Endovascular treatment of intracranial dural arteriovenous fistulas with spinal perimedullary venous drainage

1992 ◽  
Vol 77 (5) ◽  
pp. 718-723 ◽  
Author(s):  
Y. Pierre Gobin ◽  
Andre Rogopoulos ◽  
Armand Aymard ◽  
Mazen Khayata ◽  
Daniel Reizine ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Endovascular Therapy ◽  
Sinus Thrombosis ◽  
Venous Drainage ◽  
Transverse Sinus ◽  
Venous Hypertension ◽  
Arterial Phase ◽  
Content Type ◽  
Arteriovenous Fistulas ◽  
Av Fistulas

✓ Intracranial dural arteriovenous (AV) fistulas with spinal perimedullary venous drainage are rare lesions that have distinctive clinical, radiological, and therapeutic aspects. Five patients presented with an ascending myelopathy, which extended to involve the brain stem in three cases. Myelography and magnetic resonance imaging showed slightly dilated spinal perimedullary vessels. Spinal angiograms were normal in the arterial phase. Diagnosis was only possible after cerebral angiography, which demonstrated posterior fossa AV fistulas fed by meningeal arteries and draining into spinal perimedullary veins. Endovascular treatment alone resulted in angiographic obliteration of the lesion in three patients. Two patients required surgery in addition to endovascular therapy. One patient died postoperatively, and in one a transient complication of embolization was observed. Improvement after treatment was good in two cases and fair in two. Transverse sinus thrombosis was observed in three cases and was probably the cause of the aberrant venous drainage of the fistula into the spinal perimedullary veins. The pathophysiology is related to spinal cord venous hypertension. These lesions were classified as Type 5 in the Djindjian and Merland classification of dural intracranial AV fistulas. Endovascular therapy is a safe effective method in the treatment of these fistulas and should be tried first.

Sign in / Sign up

Export Citation Format

Share Document