Long-Term Results of Gamma Knife Radiosurgery for XXXX .

@entity1 @entity4 @entity1653 @entity5
BACKGROUND: The predominant treatment modality for @entity1653 is surgical resection. However, gamma knife radiosurgery is also an important treatment modality for @entity1653 that is small or cannot be completely removed because of its location. In this study, we evaluated the effectiveness and long-term results of radiosurgical treatment for @entity1653 in our institution. METHODS: We studied 628 @entity1 (130 @entity1 and 498 @entity1 ) who underwent gamma knife radiosurgery for @entity1653 , which is radiologically diagnosed, from Jan 2008 to Nov 2012. We included @entity1 with single lesion @entity1653 , and followed up after 6 months with imaging, and then at 24 months with a clinical examination. @entity1 with high-grade @entity1653 or @entity1653 were excluded. We analyzed each of the factors associated with progression free survival. The median @entity1 's age was 56.8 years. Maximal dosage was 27.8 Gy and marginal dosage was 13.9 Gy. RESULTS: The @entity5 control rate was 95%. Twenty-eight @entity1 (4.4%) showed evidence of @entity5 recurrence. Ninety-eight @entity1 (15%) developed @entity4 ( @entity4 ) after gamma-knife surgery; two of them (2%) underwent surgical resections due to @entity4 . Nine @entity1 had craniotomy and @entity5 removal after gamma knife surgery. CONCLUSION: Gamma knife surgery for @entity1653 has proven to be a safe and effective treatment tool with successful long-term outcomes. Gamma knife radiosurgery can be especially effective in cases of @entity1653 after surgical resection or where @entity4 is not present.
