Is anastomotic biopsy necessary before radiotherapy after radical prostatectomy?
PURPOSE: External beam radiotherapy may be given after radical prostatectomy as adjuvant (immediate) or therapeutic (delayed) treatment, the latter in response to evidence of disease recurrence. In patients receiving delayed radiotherapy the necessity of a positive anastomotic biopsy before treatment remains unclear. We determined whether a positive anastomotic biopsy predicted the response to radiation in this setting. MATERIALS AND METHODS: We reviewed the records of 67 patients who received radiotherapy for biochemical or biopsy proved recurrent prostate cancer after radical prostatectomy. Patients underwent surgery at our institution or its affiliated hospitals, or were referred to our institution for radiotherapy. All patients had a negative metastatic evaluation before receiving radiotherapy. Biochemical failure after radiotherapy was defined as serum prostate specific antigen (PSA) 0.2 ng./dl. or greater on 2 or more consecutive occasions. Biochemical recurrence-free survival wa
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