{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T22:01:32Z","timestamp":1783807292222,"version":"3.55.0"},"reference-count":21,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,3]]},"abstract":"OBJECTIVE<\/jats:title>Aggressive dural arteriovenous fistulas (dAVFs) with cortical venous drainage (CVD) are known for their relatively high risk of recurrent neurological events or hemorrhage. However, recent natural history literature has indicated that nonaggressive dAVFs with CVD have a significantly lower prospective risk of hemorrhage. These nonaggressive dAVFs are typically diagnosed because of symptomatic headache, pulsatile tinnitus, or ocular symptoms, as in low-risk dAVFs. Therefore, the viability of stereotactic radiosurgery (SRS) as a treatment for this lesion subclass should be investigated.<\/jats:p><\/jats:sec>METHODS<\/jats:title>The authors evaluated their institutional experience with SRS for dAVFs with CVD for the period from 1991 to 2016, assessing angiographic outcomes and posttreatment hemorrhage rates. They subsequently pooled their results with those published in the literature and stratified the results based on the mode of clinical presentation.<\/jats:p><\/jats:sec>RESULTS<\/jats:title>In an institutional cohort of 42 dAVFs with CVD treated using SRS, there were no complications or hemorrhages after treatment in 19 patients with nonaggressive dAVFs, but there was 1 radiation-induced complication and 1 hemorrhage among the 23 patients with aggressive dAVFs. In pooling these cases with 155 additional cases from the literature, the authors found that the hemorrhage rate after SRS was significantly lower among the patients with nonaggressive dAVFs (0% vs 6.8%, p = 0.003). Similarly, the number of radiation-related complications was 0\/124 in nonaggressive dAVF cases versus 6\/73 in aggressive dAVF cases (p = 0.001). The annual rate of hemorrhage after SRS for aggressive fistulas was 3.0% over 164.5 patient-years, whereas none of the nonaggressive fistulas bled after radiosurgery over 279.4 patient-years of follow-up despite the presence of CVD.<\/jats:p><\/jats:sec>CONCLUSIONS<\/jats:title>Cortical venous drainage is thought to be a significant risk factor in all dAVFs. In the institutional experience described here, SRS proved to be a low-risk strategy associated with a very low risk of subsequent hemorrhage or radiation-related complications in nonaggressive dAVFs with CVD.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2017.10.jns171802","type":"journal-article","created":{"date-parts":[[2018,3,16]],"date-time":"2018-03-16T13:59:39Z","timestamp":1521208779000},"page":"972-976","source":"Crossref","is-referenced-by-count":13,"title":["Reconsidering an important subclass of high-risk dural arteriovenous fistulas for stereotactic radiosurgery"],"prefix":"10.3171","volume":"130","author":[{"given":"Daniel A.","family":"Tonetti","sequence":"first","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bradley A.","family":"Gross","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian T.","family":"Jankowitz","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideyuki","family":"Kano","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward A.","family":"Monaco","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ajay","family":"Niranjan","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John C.","family":"Flickinger","sequence":"additional","affiliation":[{"name":"Center for Image-Guided Neurosurgery and"},{"name":"Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L. 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