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    Quick Radiation Works for Breast Cancer

    Study Shows Positive Results With 3-Week Course of Treatment
    By
    WebMD Health News
    Reviewed by Louise Chang, MD

    Nov. 4, 2009 (Chicago) -- A shorter, cheaper and more convenient three-week course of radiation appears to work just as well as the traditional six-week schedule for some women with early-stage breast cancer, a new study suggests.

    "We cut the duration of radiation treatment in half," says study researcher Manjeet Chadha, MD, a radiation oncologist at the Beth Israel Medical Center in New York. The approach is part of "the effort to personalize care and tailor it to specific patients in specific situations."

    The findings were presented at the annual meeting of the American Society for Radiation Oncology (ASTRO).

    European and Canadian studies have already shown that a short course of radiation is just as effective as the conventional longer course, Chadha says.

    "But in the U.S., there are limited data on this topic," she says. And many Americans doctors are reluctant to embrace a new treatment unless it's been proven to work here, says Harvard Medical School's Anthony Zietman, MD, incoming president of ASTRO.

    Additionally, the radiation therapy technique used in the current study is different than what's usually done, according to Chadha. Typically, doctors irradiate the entire affected breast for four or five weeks. Then, they give a radiation boost, a little each day, to the part of the breast from which the tumor was removed.

    With the new technique -- called accelerated hypofractionated whole breast irradiation -- "we simultaneously give the boost at the same time the whole breast is treated," Chadha says.

    Also, a personalized plan is developed using each patient's CT scan images. The idea is to help ensure that radiation is blasted at the tumor site and not at surrounding healthy tissue.

    At the meeting, Chadha reported on the first 121 women enrolled in the ongoing trial. All had breast-conserving surgery for early-stage breast cancer, followed by the accelerated radiation treatment.

    So far, the women have been followed for a median of two and a half years. None has suffered a recurrence of cancer in the same breast.

    None of the women experienced serious side effects, just the skin irritation and redness that is typical of any radiation treatment, Chadha says.

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