alexa Stereotactic radiosurgery for single brainstem metastases: the cleveland clinic experience.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Koyfman SA, Tendulkar RD, Chao ST, Vogelbaum MA, Barnett GH, , Koyfman SA, Tendulkar RD, Chao ST, Vogelbaum MA, Barnett GH,

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Abstract PURPOSE: To assess the imaging and clinical outcomes of patients with single brainstem metastases treated with stereotactic radiosurgery (SRS). MATERIALS AND METHODS: We retrospectively reviewed the data from patients with single brainstem metastases treated with SRS. Locoregional control and survival were calculated using the Kaplan-Meier method. Prognostic factors were assessed using a Cox proportional hazards model. RESULTS: Between 1997 and 2007, 43 patients with single brainstem metastases were treated with SRS. The median age at treatment was 59 years, the median Karnofsky performance status was 80, and the median follow-up was 5.3 months. The median dose was 15 Gy (range, 9.6-24), and the median conformality and heterogeneity index was 1.7 and 1.9, respectively. The median survival was 5.8 months from the procedure date. Of the 33 patient with post-treatment imaging available, a complete radiographic response was achieved in 2 (4.7\%), a partial response in 8 (18.6\%), and stable disease in 23 (53.5\%). The 1-year actuarial rate of local control, distant brain control, and overall survival was 85\%, 38.3\%, and 31.5\%, respectively. Of the 43 patients, 8 (19\%) died within 2 months of undergoing SRS, and 15 (36\%) died within 3 months. On multivariate analysis, greater performance status (hazard ratio [HR], 0.95, p = .004), score index for radiosurgery (HR, 0.7; p = .004), graded prognostic assessment score (HR, 0.48; p = .003), and smaller tumor volume (HR, 1.23, p = .002) were associated with improved survival. No Grade 3 or 4 toxicities were observed. CONCLUSION: The results of our study have shown that SRS is a safe and effective local therapy for patients with brainstem metastases. 2010 Elsevier Inc. All rights reserved. This article was published in Int J Radiat Oncol Biol Phys and referenced in Journal of Cancer Science & Therapy

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