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Postoperative radiation therapy for pathologic stage C prostate cancer.
Summary
Postoperative radiation therapy significantly improved local control in pathologic Stage C prostate cancer patients, especially those with seminal vesicle invasion. Adjuvant irradiation should be considered for these high-risk patients to reduce local recurrence rates.
Area of Science:
- Oncology
- Radiation Oncology
Background:
- Pathologic Stage C prostate cancer presents a risk of local recurrence after radical prostatectomy.
- Adjuvant therapies are evaluated to improve outcomes in these patients.
Purpose of the Study:
- To determine the benefit of postoperative radiation therapy in patients with pathologic Stage C prostate cancer.
- To compare disease-free survival, local control, and distant failure between surgery alone and surgery plus adjuvant irradiation.
Main Methods:
- Retrospective comparison of 26 patients receiving postoperative radiation therapy and 24 patients treated with surgery alone.
- All patients had Stage C prostate cancer post-radical prostatectomy.
- Follow-up at 5 years for oncologic outcomes.
Main Results:
- No significant difference in 5-year survival, disease-free survival, or distant metastases.
- Significantly lower local recurrence at 5 years in the irradiated group (0%) compared to the surgery-only group (16.6%).
- Local recurrence was markedly reduced in patients with seminal vesicle invasion who received adjuvant irradiation (0% vs. 30%).
Conclusions:
- Postoperative irradiation improves local control in pathologic Stage C prostate cancer.
- Adjuvant prostate bed irradiation is recommended for patients with seminal vesicle invasion due to high risk of local relapse.