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- W2063556517 abstract "BACKGROUND. This study summarizes long-term outcomes from treatment of prostate cancer with increased risk of extracapsular cancer extension (ECE) using brachytherapy-based treatment. METHODS. A total of 282 consecutive patients were treated from 1992–1996 by 1 author (M.D.). Two hundred forty-three patients had at least 1 higher risk feature for ECE including Gleason Score 7–10 (172), prostate-specific antigen (PSA) above 10 (166), and clinical stages T2c (109) and T3 (107). Using National Comprehensive Cancer Network (NCCN) guidelines, 119 patients had intermediate-risk disease and 124 had high-risk disease. Patients received pelvic 3-dimensional conformal external beam radiation followed by a palladium (Pd)-103 boost. Generous brachytherapy margins were utilized. Biochemical failure was defined using ASTRO Consensus Definition, nadir +2 and PSA >0.2 ng/mL at last follow-up. The nonfailing patient follow-up period was 1–14 years (median, 9.5 years). Biochemical data and original biopsy slides were independently re-reviewed at the University of Washington (by K.W. and L.T., respectively). RESULTS. Overall actuarial freedom from biochemical progression at 14 years was 81%, including 87% and 72% having intermediate and high-risk disease, respectively. Absolute risk of failure decreased progressively, falling to 1% beyond 6 years after treatment. All failing patients had prostate biopsies without evidence of local recurrence. The strongest predictor of failure was Gleason score (P = .03) followed by PSA (P = .041). Treatment morbidity was limited to temporary RTOG grade 1–2 urinary and gastrointestinal symptoms. CONCLUSIONS. High tumor control rates are possible with beam radiation followed by Pd-103 brachytherapy. Despite perceptions that brachytherapy is inappropriate for patients at higher risk for ECE, this series strengthens the rationale that brachytherapy-based treatment may be a desirable modality for such patients. Cancer 2007. © 2007 American Cancer Society." @default.
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- W2063556517 date "2007-01-01" @default.
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- W2063556517 title "Long-term outcomes after treatment with brachytherapy and supplemental conformal radiation for prostate cancer patients having intermediate and high-risk features" @default.
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- W2063556517 doi "https://doi.org/10.1002/cncr.22810" @default.
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