Chronic encapsulated expanding hematoma after gamma knife stereotactic radiosurgery for cerebral arteriovenous malformation.

摘要

Stereotactic radiosurgery has become an effective and safe treatment for cerebral arteriovenous malformations (AVMs) during the last two decades. More than 900 patients with AVMs have undergone GKS in Taipei Veteran General Hospital until now. In our series published in 2000, Pan et al. reported 240 AVM patients treated by GKS [1], and overall 75% complete obliteration rate would be achieved after 40 months follow-up. Furthermore, the complete obliteration rates of small, medium, and large AVMs at 40-month follow up were 92%, 80%, and 50%, respectively. In 2009, the authors reported 105 pediatric and 458 adult AVM patients treated by GKS [2], and the complete obliteration rate at 48 months follow-up was 65% in adult group, compared to 47% in pediatric group.