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Efficacy of modest dose irradiation in combination with long-term endocrinal treatment for high-risk prostate cancer: a preliminary report.

Abstract：

BACKGROUND:Although radiotherapy in combination with endocrinal manipulation has been identified as an effective treatment for patients with high-risk prostate cancer, the optimal dose for locoregional control of prostate cancer in combination with hormonal therapy has not yet been determined. METHODS:The efficacy of modest doses of irradiation (60-62 Gy) combined with long-term endocrinal treatment for patients with high-risk prostate cancer (defined as a pretreatment prostate-specific antigen (PSA) level greater than 20 ng/ml or a Gleason's score of 8-10 or T3-T4 disease) was analyzed in 60 Japanese patients. The patients included in this study had received radical radiotherapy with long-term endocrinal manipulation in the period between 1993 and 2000. The median age of the patients was 70 years (range, 56-83). Neoadjuvant hormonal therapy with a median duration of 3.9 months was performed prior to radiotherapy, and hormonal therapy was continued until recurrence. A median dose of 61.4 Gy (range, 44-71.4) was delivered to the prostate. Pelvic node irradiation was performed in 49 patients (81.6%). RESULTS:After a median follow-up period of 28.5 months, the overall survival, cause-specific survival and biochemical relapse-free survival at 3 years were 94.4%, 96% and 89.8%, respectively. Local failure was observed in one patient, distant metastases were observed in three patients and a late toxic effect greater than Grade 2 was not observed in any patients. CONCLUSIONS:This study, though preliminary due to a short-term follow-up period, reveals the possibility that modest doses of irradiation combined with long-term endocrinal treatment could be an effective means of achieving excellent local control of high-risk prostate cancer.

journal_name

Jpn J Clin Oncol

journal_title

Japanese journal of clinical oncology

authors

Sasaki T,Nakamura K,Shioyama Y,Ohga S,Urashima Y,Terashima H,Koga H,Naito S,Noma H,Komatsu K,Yamaguchi A,Honda H

doi

10.1093/jjco/hyh059

keywords:

subject

Has Abstract

pub_date

2004-07-01 00:00:00

pages

420-4

issue

eissn

0368-2811

issn

1465-3621

pii

34/7/420

journal_volume

pub_type

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Efficacy of modest dose irradiation in combination with long-term endocrinal treatment for high-risk prostate cancer: a preliminary report.