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External radiation therapy of localized prostatic cancer
Journal of the National Medical Association
|January 1, 1984
Summary
External radiation therapy for localized prostate cancer shows survival rates vary by stage. Higher tumor grade and positive lymph nodes significantly impact disease progression and survival outcomes.
Area of Science:
- Oncology
- Radiation Oncology
- Urologic Oncology
Background:
- Prostate cancer is a significant health concern, with localized disease often treated with external radiation therapy.
- Understanding prognostic factors is crucial for optimizing treatment strategies and patient outcomes.
Purpose of the Study:
- To evaluate the long-term survival and disease-free survival rates of patients with localized prostate cancer treated with external radiation therapy.
- To assess the influence of tumor stage, grade, and lymph node status on treatment outcomes.
Main Methods:
- A retrospective analysis of 140 patients with localized prostate cancer treated between July 1975 and December 1980.
- External radiation therapy was the primary treatment modality.
- Follow-up ranged from 2 to 7 years, with a median of 4.2 years.
Main Results:
- Overall survival rates were 100% for stage A2, 83% for stage B, and 53% for stage C.
- Disease-free survival rates were 91% (A2), 70% (B), and 40% (C).
- Tumor grade and positive lymph nodes were significant predictors of disease progression and poorer survival.
Conclusions:
- External radiation therapy can achieve favorable survival rates for localized prostate cancer, particularly in earlier stages.
- Tumor stage, grade, and nodal status are critical prognostic indicators that must be considered in treatment planning and outcome prediction.