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High-dose, short-course radiation for prostate cancer does not increase side effects, study finds

Date:
December 7, 2010
Source:
Fox Chase Cancer Center
Summary:
When treating prostate cancer with radiation therapy, side effects such as urinary problems and rectal pain and bleeding are a concern, as is impact on the patient's overall quality of life. So when new, more efficient treatment methods are developed, one important question is whether better treatment comes at the cost of increased side effects and decreased quality of life.

When treating prostate cancer with radiation therapy, side effects such as urinary problems and rectal pain and bleeding are a concern, as is impact on the patient's overall quality of life. So when new, more efficient treatment methods are developed, one important question is whether better treatment comes at the cost of increased side effects and decreased quality of life.

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In the case of short-course, high-dose (hypofractionated) radiation therapy, the answer is no, according research at Fox Chase Cancer Center led by Aruna Turaka, M.D., radiation oncologist at Fox Chase. Turaka is presenting the results on Nov. 2nd at the annual meeting of the American Society for Radiation Oncology.

Turaka and colleagues compared two groups of prostate cancer patients treated with intensity-modulated radiation therapy (IMRT), a technique that uses multiple beams of varying intensities to precisely radiate tumors while minimizing exposure to healthy, adjacent tissues. One group received conventional IMRT; the other group was treated with hypofractionated IMRT, which delivers a higher total dose of radiation in fewer sessions.

The patients -- a total of 307 men randomly assigned to one or the other treatment group -- were given quality of life assessments at the beginning of treatment and six, 12, and 24 months later. They were also evaluated at the same timepoints for genitourinary and gastrointestinal problems.

"We found no significant differences between the two groups," says Turaka. "Hypofractionated IMRT not only decreases the treatment duration -- 26 days compared to 38 days for conventional IMRT -- but it also allows us to deliver a higher total dosage. Our results tell us that we can achieve these higher dosages with no change in side effect profile or quality of life."

Longer follow-up is needed to draw conclusions about the relative efficacy of regular and hypofractionated IMRT in treating prostate cancer, Turaka says.

In addition to Turaka, the paper's authors are biostatistics instructor Fang Zhu, Ph.D; radiation oncologist Mark Buyyounouski; M.D.; and Eric Horwitz, M.D., the Gerald E. Hanks Chair in Radiation Oncology, all of Fox Chase Cancer Center; Deborah Watkins-Bruner, Ph.D., R.N., the Independence Professor in Nursing Education at the University of Pennsylvania School of Nursing; Andre Konski, M.D., M.B.A., chair of radiation oncology at Wayne State University School of Medicine; and Alan Pollack, M.D., Ph.D., professor and chair of radiation oncology at University of Miami School of Medicine.


Story Source:

The above story is based on materials provided by Fox Chase Cancer Center. Note: Materials may be edited for content and length.


Cite This Page:

Fox Chase Cancer Center. "High-dose, short-course radiation for prostate cancer does not increase side effects, study finds." ScienceDaily. ScienceDaily, 7 December 2010. <www.sciencedaily.com/releases/2010/11/101101093608.htm>.
Fox Chase Cancer Center. (2010, December 7). High-dose, short-course radiation for prostate cancer does not increase side effects, study finds. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2010/11/101101093608.htm
Fox Chase Cancer Center. "High-dose, short-course radiation for prostate cancer does not increase side effects, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/11/101101093608.htm (accessed October 25, 2014).

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