Gamma Knife Radiosurgery For Cerebellar HemangioblastomasDouglas Castro1, Soraya Aurani J.1, Miguel Montes Canteras11Institute of Neurologic Radiosurgery, São Paulo, Brazil. Keywords: hemangioblastoma, gamma knife, cerebellum, outcome, von Hippel-Lindau disease
The objective of this study was to assess the role of radiosurgery (RS) in the management of primary or recurrent cerebellar hemangioblastomas.
Retrospective analysis of 10 patients out of 11 consecutive patients with cerebellar hemangioblastomas (21 lesions) treated with RS between 1999 and 2008. RS was delivered with Gamma Knife for primary (16 lesions) or recurrent (5 lesions) hemangioblastomas. Seven patients had von Hippel-Lindau disease-associated hemangioblastomas (15 lesions) and 3 had sporadic hemangioblastomas (6 lesions).
The median dose was 15 Gy (13 – 24 Gy) and the median target volume was 0,8 mL (0,01 - 11,5 mL).
The median follow-up was 36,5 months (6 -114 months). Tumor growth was controlled in 85,7% (8 in 21) of the cases. One patient died from disease progression. The progression-free survival after RS at 1 and 3 years was 100% and 89%, respectively. No complication such as radiation-induced peritumoral edema or radiation necrosis occurred.
This is a retrospective study.
These early results show that RS provides a high local control rate of cerebellar hemangioblastomas.
Also RS is associated with a low risk of adverse radiation effects and is an attractive alternative to multiple surgical procedures for patients with von Hippel-Lindau disease. Project Roles:
D. Castro (), S. J. (), M. Canteras ()