Stereotactic radiosurgery with neoadjuvant embolization of larger arteriovenous malformations: an institutional experience.

Publication/Presentation Date

1-1-2014

Abstract

OBJECTIVE: This study investigates the safety and efficacy of a multimodality approach combining staged endovascular embolizations with subsequent SRS for the management of larger AVMs.

METHODS: Ninety-five patients with larger AVMs were treated with staged endovascular embolization followed by SRS between 1996 and 2011.

RESULTS: The median volume of AVM in this series was 28 cm(3) and 47 patients (48%) were Spetzler-Martin grade IV or V. Twenty-seven patients initially presented with hemorrhage. Sixty-one patients underwent multiple embolizations while a single SRS session was performed in 64 patients. The median follow-up after SRS session was 32 months (range 9-136 months). Overall procedural complications occurred in 14 patients. There were 13 minor neurologic complications and 1 major complication (due to embolization) while four patients had posttreatment hemorrhage. Thirty-eight patients (40%) were cured radiographically. The postradiosurgery actuarial rate of obliteration was 45% at 5 years, 56% at 7 years, and 63% at 10 years. In multivariate analysis, larger AVM size, deep venous drainage, and the increasing number of embolization/SRS sessions were negative predictors of obliteration. The number of embolizations correlated positively with the number of stereotactic radiosurgeries (P < 0.005).

CONCLUSIONS: Multimodality endovascular and radiosurgical approach is an efficacious treatment strategy for large AVM.

Volume

2014

First Page

306518

Last Page

306518

ISSN

2314-6141

Disciplines

Medicine and Health Sciences

PubMedID

24579080

Department(s)

Administration and Leadership

Document Type

Article

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