© 2003 by Oxford University Press
© 2003 Oxford University Press
EDITORIAL |
Surrogate End Points for Prostate Cancer: What Is Prostate-Specific Antigen Telling Us?
Affiliations of authors: H. M. Sandler, Department of Radiation Oncology, University of Michigan, Ann Arbor, MI; M. L. DeSilvio, American College of Radiology, Philadelphia, PA.
Correspondence to: Howard M. Sandler, MD, Department of Radiation Oncology, University of Michigan, Ann Arbor, MI 481090010 (e-mail: hsandler@umich.edu).
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Prostate cancer is a common malignancy. The observed incidence of prostate cancer has undergone dramatic changes because of the widespread use of prostate-specific antigen (PSA)-based screening. The debate surrounding the use of PSA as a screening method continues, whereas the use of PSA as a tool to detect recurrences of prostate cancer after initial therapy is fully enshrined in the post-therapy routine of patients with prostate cancer. Although defining the precise time of treatment failure after radiation therapy or surgery can be contested (13), there is little doubt that a sustained pattern of increasing PSA values after treatment is an indication of the presence of active prostate cancer. Furthermore, just as patients with newly diagnosed prostate cancer often
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