Abstract | BACKGROUND: Treatment of tumors metastatic to the brainstem with stereotactic radiosurgery (SRS) has not been widely studied. OBJECTIVE: To identify the effects of SRS on patients with brainstem metastases by assessing duration of local progression-free survival (LPFS) and overall survival. METHODS: We retrospectively reviewed clinical data collected from 60 patients undergoing linear accelerator-based SRS for tumors metastatic to the brainstem between August 1994 and December 2007. The LPFS and overall survival were calculated with the Kaplan-Meier method. Prognostic factors were evaluated with the log-rank test and Cox proportional hazards model. RESULTS: The median age of patients was 61 years (range, 39-85 years); the median treated lesion volume was 1.0 mL (range, 0.1-8.7 mL); and the median SRS dose was 15 Gy (range, 8-18 Gy). The median overall survival interval after SRS was 4 months (95% confidence interval, 3.4-4.9 months); crude local tumor control was 76%; and median LPFS was 5.7 months (95% confidence interval, 3.0-8.4 months). Shorter overall survival was associated with a pretreatment tumor volume ≥4 mL (P < .001) and male sex (P = .03). Shorter LPFS was associated with a pretreatment tumor volume ≥4 mL (P = .008), a melanoma primary tumor (P = .002), and the presence of necrosis in pre-SRS magnetic resonance imaging (P = .04). A Basic Score for Brain Metastases of 2 to 3 vs 1 (P = .007) and a Score Index for Radiosurgery >5 (P = .003) were significantly associated with longer survival. Twelve patients (20%) developed SRS-related complications. CONCLUSION: Stereotactic radiosurgery provides noninvasive treatment and favorable local tumor control for patients with brainstem metastases.
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Authors | Mustafa Aziz Hatiboglu, Eric L Chang, Dima Suki, Raymond Sawaya, David M Wildrick, Jeffrey S Weinberg |
Journal | Neurosurgery
(Neurosurgery)
Vol. 69
Issue 4
Pg. 796-806; discussion 806
(Oct 2011)
ISSN: 1524-4040 [Electronic] United States |
PMID | 21508879
(Publication Type: Journal Article)
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Topics |
- Adult
- Aged
- Aged, 80 and over
- Brain Stem Neoplasms
(mortality, secondary, surgery)
- Female
- Humans
- Kaplan-Meier Estimate
- Male
- Middle Aged
- Prognosis
- Radiosurgery
(mortality)
- Radiotherapy Planning, Computer-Assisted
- Retrospective Studies
- Treatment Outcome
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