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Radiosurgery for brain metastases from primary lung carcinoma
R Hoffman1, P K Sneed, M W McDermott
1Department of Radiation Oncology, University of California, San Francisco 94143-0226, USA.
Cancer Journal (Sudbury, Mass.)
|April 28, 2001
Summary
Stereotactic radiosurgery is effective for lung cancer brain metastases. Combining it with whole-brain radiotherapy may improve brain control but not overall survival.
Area of Science:
- Neurosurgery
- Oncology
- Radiation Oncology
Background:
- Brain metastases are a frequent complication in lung cancer patients.
- Effective treatment strategies for these metastases are crucial for improving patient outcomes.
Purpose of the Study:
- To evaluate the efficacy and toxicity of stereotactic radiosurgery (SRS) for lung carcinoma brain metastases.
- To identify prognostic factors influencing survival in patients treated with SRS.
Main Methods:
- Retrospective review of 113 lung cancer patients treated with SRS (with or without whole-brain radiotherapy) for brain metastases.
- Kaplan-Meier method for survival and freedom from progression analysis.
- Log-rank test and Cox proportional hazards models for prognostic factor evaluation.
Main Results:
- Median survival post-SRS was 12.0 months. Patients with newly diagnosed metastases and fewer lesions or no extracranial disease had better survival.
- Initial SRS combined with whole-brain radiotherapy showed improved brain control compared to SRS alone.
- Higher Karnofsky score, primary tumor control, and fewer metastases were associated with better survival in recurrent cases.
Conclusions:
- Stereotactic radiosurgery is an effective treatment for selected lung cancer patients with brain metastases.
- While whole-brain radiotherapy with SRS may enhance brain tumor control, it does not appear to improve overall survival.
- Further randomized trials are necessary to clarify the optimal role of SRS and WBRT in managing brain metastases.