{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:03:11Z","timestamp":1787025791802,"version":"build-2736575974"},"reference-count":30,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2000,8]]},"abstract":"<jats:p content-type=\"fine-print\">\n                    <jats:italic>Object.<\/jats:italic>\n                    The goal of this study was to determine the prevalence, characteristics, and radiosurgical outcomes of headaches associated with occipital arteriovenous malformations (AVMs).\n                  <\/jats:p>\n                  <jats:p content-type=\"fine-print\">\n                    <jats:italic>Methods.<\/jats:italic>\n                    The authors reviewed the medical records of 37 consecutive patients with occipital AVMs who had been treated by radiosurgery to identify the radiological features of the AVMs before and after treatment and the clinical features and outcomes of headaches described in accordance with the criteria of the International Headache Society (IHS).\n                  <\/jats:p>\n                  <jats:p content-type=\"fine-print\">\n                    Thirty-six patients (97.3%) were followed for a mean period of 46.6 months. The median volume of the AVMs was 1.9 cm\n                    <jats:sup>3<\/jats:sup>\n                    , to which a mean radiation dose of 21.6 Gy was delivered. In the entire study group, periodic headaches were found in 17 patients (45.9%), of whom seven (18.9%) suffered from migraines with the characteristic visual aura. Migraine was predominantly found in patients with right-sided (p = 0.038) or laterally located (p = 0.025) AVMs. Factors associated with a higher incidence of any type of headache included larger nidus volume (p = 0.02), tortuous change of feeding artery (p = 0.036), and cortical drainage with reflux in the superior sagittal sinus (p = 0.032). The actuarial rate of angiographic obliteration was 71.6% at 3 years. Headaches resolved or improved in 12 (70.6%) of 17 patients, including six (85.7%) of seven with migraine. The outcome of headache closely correlated with the obliteration results of the AVM (p = 0.002).\n                  <\/jats:p>\n                  <jats:p content-type=\"fine-print\">\n                    <jats:italic>Conclusions.<\/jats:italic>\n                    A portion of occipital AVMs do cause headaches that satisfy the current IHS criteria for migraine, and the prevalence varies by the topography of the lesion. Radiosurgery can resolve headaches in the majority of treated patients.\n                  <\/jats:p>","DOI":"10.3171\/jns.2000.93.2.0224","type":"journal-article","created":{"date-parts":[[2009,5,13]],"date-time":"2009-05-13T13:27:54Z","timestamp":1242221274000},"page":"224-228","source":"Crossref","is-referenced-by-count":29,"title":["Headaches in patients with radiosurgically treated occipital arteriovenous 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