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Radical external beam radiation therapy for prostate carcinoma
Journal of the Canadian Association of Radiologists
|June 1, 1984
Summary
Radical external beam radiation therapy for prostate carcinoma shows a 72% five-year survival rate. Advanced disease was common, but a dose-response relationship was observed, with higher radiation doses improving outcomes.
Area of Science:
- Oncology
- Radiation Oncology
- Urologic Oncology
Background:
- Prostate carcinoma treatment has evolved significantly.
- Radical external beam radiation therapy (EBRT) is a curative option.
- Understanding prognostic factors is crucial for treatment planning.
Purpose of the Study:
- To evaluate the outcomes of radical external beam radiation therapy for prostate carcinoma.
- To identify significant prognostic factors influencing survival.
- To assess the dose-response relationship in prostate cancer radiation therapy.
Main Methods:
- Retrospective review of 202 patients treated with radical EBRT between 1970-1978.
- Analysis of overall and disease-free survival rates at five years.
- Statistical analysis to identify prognostic factors and dose-response.
Main Results:
- Overall five-year survival was 72%; five-year disease-free survival was 46%.
- Tumor grade, extent of disease, diagnostic procedure, and radiation dose were significant prognostic factors.
- A minimum dose of 5000 Gy significantly improved survival.
Conclusions:
- Prostate carcinoma is radiosensitive to external beam radiation.
- A clear dose-response relationship exists, supporting higher radiation doses for improved outcomes.
- Radical EBRT can achieve favorable survival rates even in patients with advanced disease.