PMID: 16636509Apr 26, 2006Paper

Delayed hemorrhage from completely obliterated arteriovenous malformation after gamma knife radiosurgery

Neurologia Medico-chirurgica
Hiroaki MatsumotoUshio Sasaki

Abstract

A 43-year-old female was treated with gamma knife radiosurgery (GKS) for right frontal arteriovenous malformation (AVM) manifesting as absence seizures. Complete nidus obliteration was confirmed on angiography 4 years after GKS. However, she experienced recurrence of her previous seizures and delayed hemorrhage occurred within the treated nidus, despite absence of abnormalities by repeated angiography 81 months after GKS. She was treated conservatively and discharged home without neurological deficits. The risk of hemorrhage from obliterated AVM is significantly reduced but not eliminated after radiosurgery. Recanalization of thrombus that is too small to detect by neuroimaging may result in delayed hemorrhage.

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Citations

Dec 26, 2015·World Neurosurgery·Wuyang YangJudy Huang
Mar 1, 2012·Stroke; a Journal of Cerebral Circulation·Vera ParkhutikVíctor Vázquez

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