• J Neurol Surg A Cent Eur Neurosurg · Dec 2013

    Case Reports

    Acute onset of hemiparesis after gamma knife radiosurgery for arteriovenous malformation caused by hyperacute thrombosis of draining vein: a case report.

    • A S Ramesh, Arivazhagan Arimappamagan, Dhananjaya Bhat, H R Arvinda, and Sampath Somanna.
    • Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India.
    • J Neurol Surg A Cent Eur Neurosurg. 2013 Dec 1;74 Suppl 1:e261-5.

    BackgroundComplications after gamma knife radiosurgery (GKRS) have been attributed most commonly to radiation-induced damage to the brain. Early occlusion of the draining veins has been postulated as one of the rare causes of complications after GKRS, which often occurs at or beyond 6 months after GKRS.Clinical PresentationWe present a very rare incidence of acute onset of hemiparesis caused by a draining vein occlusion within 24 hours after GKRS for arteriovenous malformation. The patient developed hemiparesis within one day after GKRS, which partially improved with steroids. Radiologic investigations revealed an early occlusion of a draining vein, resulting in occlusive hyperemia and neurologic deficit.ConclusionEarly draining vein occlusion is an important cause of postradiosurgery complications, and it can rarely occur within days.Georg Thieme Verlag KG Stuttgart · New York.

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