Abstract
The aim was to evaluate treatment of cerebral metastases with hypofractionated conformal stereotactic radiotherapy (HCSRT) or whole-brain radiotherapy (WBRT) in combination with a stereotactic boost. Forty-seven patients were treated with HCSRT and 14 patients with WBRT in combination with a stereotactic boost. Radiation doses were 40 Gy (5 fractions) in HCSRT or 30 Gy (WBRT) combined with a mean dose of 17 Gy stereotactically (1-3 fractions). The median survival time in the HCSRT as well as the WBRT group was 5.0 months, and 87% died of extracranial disease. Radiologic follow-up (mean, 3.7 months after treatment) showed local control in the HCSRT group in 84% and in the WBRT group in 100%. Patients treated with HCSRT developed new brain metastases distant from the irradiated area in 25%. Two patients treated with HCSRT deteriorated neurologically during treatment, and in 2 patients radionecrosis developed. Although there may be a higher risk of distant new metastases, HCSRT as a treatment for brain metastases seems to be as effective as WBRT in combination with a stereotactic boost. Complications are in the range of what has been reported previously.
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