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  • Title: Gamma Knife Radiosurgery for High-Grade Gliomas: Single-Center Experience of Six Years in China.
    Author: Zhao M, Fu X, Zhang Z, Ma L, Wang X, Li X.
    Journal: Stereotact Funct Neurosurg; 2021; 99(3):181-186. PubMed ID: 33756470.
    Abstract:
    OBJECTIVE: The aim of this study was to evaluate the efficacy of Gamma Knife radiosurgery (GKRS) as a salvage therapy for high-grade glioma in our center. METHODS: A total of 167 patients with malignant glioma were treated with GKRS in our Gamma Knife Center between January 2013 and December 2017; 140 patients (85 males and 55 females) were followed up and enrolled in our study. A single lesion was found in 110 cases, and multiple lesions were found in 30 cases; 108 cases received a single therapy, and in 32 cases, at least 2 GKRSs were performed. The median tumor volume was 13.5 cm3. The mean radiation dosage was 14.35 Gy (range, 6-18 Gy). MRI was performed regularly. The RANO criteria and Cox analysis were used to evaluate the therapeutic efficiency. RESULTS: Follow-up MRI showed the local control rate was 61.4% at 3 months after GKRS, 25.0% at 6 months, and 7.1% at 12 months. The mean and median progression-free survival (PFS) periods were 8.6 (95% CI, 6.3-11.0) and 4 (95% CI, 3.5-4.5) (range, 1-60) months, respectively. The overall survival (OS) after GKRS was 3-62 months, with a mean of 16.7 (95% CI, 14.6-18.9) months, and the median survival was 13 (95% CI, 12.1-13.9) months. The 1-, 2-, and 5-year survival rates were 51.4, 10.0, and 2.9%, respectively. No severe complications occurred. Cox regression showed that glioma pathology was closely related to prognosis (p < 0.05). The Karnofsky Performance Score had little influence on PFS (p > 0.05) but influenced OS significantly (p < 0.05). CONCLUSION: GKRS can be used to effectively treat malignant brain glioma and can therefore be used as an alternative treatment option.
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