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Mayo researchers find few side effects from radiation treatment given after prostate cancer surgery
Date:9/28/2009

JACKSONVILLE, Fla. The largest single-institution study of its kind has found few complications in prostate cancer patients treated with radiotherapy after surgery to remove the prostate. Men in this study received radiotherapy after a prostate-specific antigen (PSA) test following surgery indicated their cancer had recurred.

Researchers say the findings from Mayo Clinic's campuses in Florida and Minnesota suggest that patients and their physicians should not overly worry about toxicity and side effects from the treatment, known as salvage external beam radiotherapy. The study findings will be published in the October issue of Radiotherapy and Oncology.

"There is a general fear of this kind of radiation treatment on the part of some patients and their physicians, but this study shows that it not only effectively eradicates the recurrent cancer in a substantial number of patients, but that there are few serious side effects," says the study's lead investigator, Jennifer Peterson, M.D., from the Department of Radiation Oncology at Mayo Clinic in Florida.

"It is really important that patients and their doctors watch PSA levels after a radical prostatectomy, which is a complete removal of the prostate," she says. In men who have an intact prostate, a PSA test can indicate either an enlarged prostate gland or development of cancer in the prostate, says Dr. Peterson. "But in men without a prostate, a rising PSA level indicates that cancer has recurred. After a recurrence is detected, there is only a narrow window of time during which radiotherapy will be beneficial in controlling their cancer."

"No other therapy besides salvage external beam radiotherapy has been shown to cure these patients," she adds.

In 2009, an estimated 192,000 American men will have newly diagnosed prostate cancer. Approximately one-third (about 64,000 men) will choose radical prostatectomy as their primary treatment, according to the Natio
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Contact: Kevin Punsky
punsky.kevin@mayo.edu
904-953-2299
Mayo Clinic
Source:Eurekalert

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