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  • Title: Prostate brachytherapy in men > or =75 years of age.
    Author: Merrick GS, Wallner KE, Galbreath RW, Butler WM, Brammer SG, Allen ZA, Adamovich E.
    Journal: Int J Radiat Oncol Biol Phys; 2008 Oct 01; 72(2):415-20. PubMed ID: 18374514.
    Abstract:
    PURPOSE: To evaluate cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) in prostate cancer patients aged > or =75 years undergoing brachytherapy with or without supplemental therapies. METHODS AND MATERIALS: Between April 1995 and August 2004, 145 consecutive patients aged > or =75 years underwent permanent prostate brachytherapy. Median follow-up was 5.8 years. Biochemical progression-free survival was defined by a prostate-specific antigen level < or =0.40 ng/mL after nadir. Patients with metastatic prostate cancer or hormone-refractory disease without obvious metastases who died of any cause were classified as dead of prostate cancer. All other deaths were attributed to the immediate cause of death. Multiple clinical, treatment, and dosimetric parameters were evaluated for impact on survival. RESULTS: Nine-year CSS, bPFS, and OS rates for the entire cohort were 99.3%, 97.1%, and 64.5%, respectively. None of the evaluated parameters predicted for CSS, whereas bPFS was most closely predicted by percentage positive biopsies. Overall survival and non-cancer deaths were best predicted by tobacco status. Thirty-seven patients have died, with 83.8% of the deaths due to cardiovascular disease (22 patients) or second malignancies (9 patients). To date, only 1 patient (0.7%) has died of metastatic prostate cancer. CONCLUSIONS: After brachytherapy, high rates of CSS and bPFS are noted in elderly prostate cancer patients. Overall, approximately 65% of patients are alive at 9 years, with survival most closely related to tobacco status. We believe our results support an aggressive locoregional approach in appropriately selected elderly patients.
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