Background And Purpose: Analysis of treatment results of combined three-dimensional conformal radiotherapy (3DCRT) and hormonal therapy in patients with locally recurrent prostate cancer after radical prostatectomy.
Patients And Methods: Between 1992 and 1998, 24 patients presented with a rising prostate-specific antigen (PSA) between 4 and 152 months following radical prostatectomy and a local recurrence demonstrated by imaging. Recurrence was biopsy-proven in 13 cases. All patients were treated with 3DCRT to a total dose of 60-70 Gy. 21 patients (88%) received adjuvant hormone therapy up to a maximum of 6 months.
Results: All patients showed a response in PSA values after therapy. Median follow-up is 43 months. Overall survival is 80% and 67% at 3 and 5 years, respectively. Biochemical control rates are 53% and 38% at 3 and 5 years, respectively. 14 patients developed a second PSA relapse. Acute and late toxicities, classified with the RTOG score, were moderate.
Conclusion: Radiotherapy and short-term adjuvant hormone therapy represent an effective and well-tolerated treatment for locally recurrent prostate cancer after radical prostatectomy resulting in good local control. Long-term prognosis in terms of biochemical control and disease-specific survival remains poor.
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