Health outcomes after external-beam radiation therapy for clinically localized prostate cancer: results from the Prostate Cancer Outcomes Study

Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology
Ann S HamiltonArnold L Potosky

Abstract

Studies reporting effects of radiotherapy for prostate cancer on sexual, bowel, and urinary function have been conducted primarily in referral centers or academic institutions. Effects of external-beam radiotherapy for prostate cancer among a population-based cohort were assessed. The study population included 497 white, Hispanic, and African-American men with localized prostate cancer from six US cancer registries who were diagnosed between October 1, 1994, and October 31, 1995, and treated initially with external-beam radiotherapy. They were interviewed at regular intervals, and medical records were reviewed. Distributions of responses for bowel-, urinary-, and sexual-related functions at 6, 12, and 24 months after diagnosis and adjusted mean composite change scores for each domain were analyzed. Declines of 28.9% in the sexual function score and 5.4% in the bowel function score occurred by 24 months, whereas at this time, the urinary function score was relatively unchanged. A total of 43% of those who were potent before diagnosis became impotent after 24 months. More than two thirds of the men were satisfied with their treatment and would make the same decision again. Sexual function was the most adversely affected quality-o...Continue Reading

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