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J. Marc C. Van Dijk, Karel G. TerBrugge, Robert A. Willinsky, and M. Christopher Wallace

: Intracranial dural arteriovenous malformations: factors predisposing to an aggressive neurological course. J Neurosurg 72 : 839 – 850 , 1990 Awad IA, Little JR, Akarawi WP, et al: Intracranial dural arteriovenous malformations: factors predisposing to an aggressive neurological course. J Neurosurg 72: 839–850, 1990 2. Barnwell SL , Halbach VV , Dowd CF , et al : Multiple dural arteriovenous fistulas of the cranium and spine. AJNR 12 : 441 – 445 , 1991 Barnwell SL, Halbach VV, Dowd CF, et al: Multiple dural

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Bradley A. Gross, Alexander E. Ropper, A. John Popp, and Rose Du

demonstrate obliteration at 3 years. For our literature review, a PubMed search was performed using the terms “arteriovenous fistula,” “dural arteriovenous fistula,” “dAVF,” “SRS,” and “radiosurgery.” Identified publications were reviewed for obliteration rates, post-SRS hemorrhage rates, transient clinical worsening, and permanent clinical worsening at follow-up. We additionally extracted these parameters for DAVFs stratified by location and drainage pattern, gathering ample information about cavernous, transverse-sigmoid, and tentorial AVFs, as well as those with and

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Jai Jai Shiva Shankar, Karel terBrugge, and Timo Krings

study and manuscript preparation include the following. Conception and design: Shankar. Acquisition of data: Shankar. Drafting the article: Shankar. Critically revising the article: Krings. Reviewed final version of the manuscript and approved it for submission: all authors. Administrative/technical/material support: terBrugge. Study supervision: Krings, terBrugge. References 1 Barnwell SL , Halbach VV , Dowd CF , Higashida RT , Hieshima GB , Wilson CB : Multiple dural arteriovenous fistulas of the cranium and spine . AJNR Am J Neuroradiol

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Bradley A. Gross, Alexander E. Ropper, and Rose Du

intracranial aneurysms and arteriovenous malformations: frequency of intracranial hemorrhage and relationship of lesions . J Neurosurg 73 : 859 – 863 , 1990 10.3171/jns.1990.73.6.0859 3 Chen Z , Zhu G , Feng H , Tang W , Wang X : Dural arteriovenous fistula of the anterior cranial fossa associated with a ruptured ophthalmic aneurysm: case report and review of the literature . Surg Neurol 69 : 318 – 321 , 2008 10.1016/j.surneu.2006.12.057 4 da Costa L , Wallace MC , Ter Brugge KG , O'Kelly C , Willinsky RA , Tymianski M : The

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Kenichi Sato, Karel G. TerBrugge, and Timo Krings

S pinal dural arteriovenous fistulas are the most frequent vascular malformation in the spine and account for approximately 70% of all spinal vascular malformations. 8 , 17 At least 80% of patients are male, and more than 66% of patients are in their 6th or 7th decade of life, indicating a preponderance of male and older patients. 6 Generally thought to be an acquired lesion, this fistula is located within the dura mater where the arterial blood from radiculomeningeal arteries enters a radicular vein. 10 , 11 , 13 The arterialized venous system will

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Kariyattil Rajeev and Dilip Panikar

arteriovenous fistula and progressive conus medullaris syndrome as complications of lumbar discectomy. Case report. J Neurosurg 97 : 375 – 379 , 2002 Asakuno K, Kim P, Kawamoto T, Ogino M: Dural arteriovenous fistula and progressive conus medullaris syndrome as complications of lumbar discectomy. Case report. J Neurosurg 97: 375–379, 2002 2. Djindjian M , Ayache P , Brugieres P , Poirier J : Sacral lipoma of the filum terminale with dural arteriovenous fistula. Case report. J Neurosurg 71 : 768 – 771 , 1989

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Complex dural arteriovenous fistulas

Results of combined endovascular and neurosurgical treatment in 16 patients

Stanley L. Barnwell, Van V. Halbach, Randall T. Higashida, Grant Hieshima, and Charles B. Wilson

, arterial supply, venous drainage, previous treatment, embolization, surgery, and outcome is summarized in Table 1 . TABLE 1 Summary of a series of 16 consecutive patients with large or complicated dural arteriovenous fistulas * Case No. Age (yrs), Sex Presentation Site of Fistula Arterial Supply Venous Occlusion Prior Treatment Embolization of Arterial Supply Surgery Postop Angiogram 1 64, M bruit rt transverse sinus EC, IC yes none EC × 2 fistula excision not done 2 70, M

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Neurosurgical Forum: Letters to the Editor To The Editor J. Marc C. van Dijk , M.D. Leiden University Medical Center Leiden, The Netherlands Karel G. TerBrugge , M.D. Toronto Western Hospital Ontario, Canada 1486 1487 Abstract Object. The aim of this study was to assess the efficacy and safety of radiosurgery for the treatment of dural arteriovenous fistulas (DAVFs) located in the region of the transverse—sigmoid sinus. Methods. A series of 20 patients with DAVFs located in the

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Dennis J. Cordato, Mark A. Davies, Lynette T. Masters, Phillip D. Cremer, Raymond S. Schwartz, William Sorby, and Zoran Becvarovski

cord and/or brainstem. 1–3, 7 The most frequent clinical presentation of a spinal DAVF is progressive myelopathy. 9, 10, 14 Manifestations of intracranial DAVFs include optic atrophy, oculomotor palsy, cerebellar dysfunction, and pseudotumor cerebri. 6, 7, 11 Dural arteriovenous fistulas of the foramen magnum can cause clinical signs of intracranial venous hypertension. 4 To the best of our knowledge, there have been no previous reports of central vestibular signs and symptoms in association with spinal DAVFs. We describe the unique case of a patient presenting

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Peter Adamczyk, Arun Paul Amar, William J. Mack, and Donald W. Larsen

data: Adamczyk, Amar. Analysis and interpretation of data: Adamczyk, Amar. Drafting the article: Adamczyk. Critically revising the article: all authors. Reviewed submitted version of manuscript: Adamczyk. References 1 Abud TG , Nguyen A , Saint-Maurice JP , Abud DG , Bresson D , Chiumarulo L , : The use of Onyx in different types of intracranial dural arteriovenous fistula . AJNR Am J Neuroradiol 32 : 2185 – 2191 , 2011 10.3174/ajnr.A2702 2 Amar AP , Teitelbaum GP , Larsen DW : A novel technique and new grading scale for the