The Prognostic Impact of Seminal Vesicle Involvement Found at Prostatectomy and the Effects of Adjuvant Radiation: Data From Southwest Oncology Group 8794

Gregory P. Swanson, Bryan Goldman, Catherine M. Tangen, Joseph Chin, Edward Messing, Edith Canby-Hagino, Jeffrey D. Forman, Ian M. Thompson, E. David Crawford

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

Purpose: From the randomized study Southwest Oncology Group 8794 we evaluated the effect of seminal vesicle involvement on outcomes and whether those patients benefited from post-prostatectomy adjuvant radiation therapy. Materials and Methods: Southwest Oncology Group study 8794 randomized high risk patients (with seminal vesicle positive disease and/or capsular penetration and/or positive margins) to radiation vs observation after prostatectomy. A total of 431 subjects with pathologically advanced prostate cancer were randomized. Results: Median followup was 12.2 years. Of the patients 139 had seminal vesicle involvement with or without capsular penetration and/or positive margins. Compared to the 286 patients with seminal vesicle negative disease there was poorer 10-year biochemical failure-free survival (33% for seminal vesicle negative and 22% for seminal vesicle positive, p = 0.04), metastasis-free survival (70% and 56%, respectively, p = 0.005) and overall survival (10-year overall survival 74% and 61%, respectively, p = 0.02) for those with seminal vesicle positive disease. Patients with seminal vesicle positive disease who received adjuvant radiation compared to observation realized an improvement in 10-year biochemical failure-free survival from 12% to 36% (p = 0.001), in 10-year overall survival from 51% to 71% (p = 0.08) and in metastasis-free survival from 47% to 66% (p = 0.09), respectively. Conclusions: Although seminal vesicle involvement is a negative prognostic factor, long-term control is possible especially if patients are given adjuvant radiation therapy. This therapy appears to be effective in patients with seminal vesicle involvement.

Original languageEnglish (US)
Pages (from-to)2453-2458
Number of pages6
JournalJournal of Urology
Volume180
Issue number6
DOIs
StatePublished - Dec 1 2008

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Keywords

  • prostatectomy
  • radiotherapy, adjuvant
  • seminal vesicles

ASJC Scopus subject areas

  • Urology

Cite this

Swanson, G. P., Goldman, B., Tangen, C. M., Chin, J., Messing, E., Canby-Hagino, E., Forman, J. D., Thompson, I. M., & Crawford, E. D. (2008). The Prognostic Impact of Seminal Vesicle Involvement Found at Prostatectomy and the Effects of Adjuvant Radiation: Data From Southwest Oncology Group 8794. Journal of Urology, 180(6), 2453-2458. https://doi.org/10.1016/j.juro.2008.08.037