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Obesity Significantly Increases Side Effects of Stereotactic Body Radiation Therapy in Lung Cancer Patients
Date:11/2/2009

npoints high doses of radiation directly on the cancer in a shorter amount of time than traditional treatments. Cancer centers often call the treatments by the brand names of the manufacturers, including Axesse, CyberKnife, Gamma Knife, Novalis, Primatom, Synergy, X-Knife, TomoTherapy and Trilogy. Treatment is typically delivered in 1 to 2 weeks, instead of a period of 6 to 8 weeks.

"SBRT is now being investigated as a replacement to surgery for early-stage lung cancer. If this non-invasive technique is to replace surgery, not only does it need to be effective, but also safe," Dr. Welsh said. "Since this study shows that a 35Gy dose of radiation, obesity, and diabetes increase the risk of developing late negative side effects after high dose radiation, then we can take steps to reduce these side effects."

The study involved 265 patients with tumors within less than 2.5 centimeters of the chest wall, who were treated with SBRT between August 2004 and August 2008. Of these patients, 39 percent developed skin toxicity, while six percent developed acute pain and 22 percent developed chronic pain. In patients who are considered obese, diabetes mellitus was found to be a significant contributing factor in the development of chest pain.

For more information on cancer and stereotactic radiation therapy, visit www.rtanswers.org.

The abstract, "Skin Toxicity And Pain In Patients Treated With Stereotactic Body Radiotherapy," will be presented at a scientific session at 3:20 p.m. on Tuesday, November 3, 2009. To speak to the lead author of the study, James Welsh, M.D., please call Beth Bukata or Nicole Napoli November 1-4, 2009, in the ASTRO Press Room at McCormick Place West at 312-791-7005 or 312-791-7006. You may also e-mail them at '/>"/>

SOURCE American Society for Radiation Oncology
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