Navigation Links
Study: Majority of older, early-stage breast cancer patients benefit from radiation after lumpectomy

HOUSTON For the majority of older, early-stage breast cancer patients, radiation therapy following breast conserving surgery may help prevent the need for a later mastectomy, according to research from The University of Texas MD Anderson Cancer Center.

The findings, published in the journal Cancer, are contrary to current national treatment guidelines, which recommend that older women with early stage, estrogen-positive disease be treated with lumpectomy followed by estrogen blocker therapy alone -- and forgo radiation therapy post-surgery.

The potential benefit of radiation in this patient population has been the focus of much research over the past decade, said Benjamin Smith, M.D., assistant professor in the Department of Radiation Therapy at MD Anderson and the study's corresponding author.

In 2004, a major study found that women who received tamoxifen alone, compared to tamoxifen and six weeks of radiation, had a slightly higher incidence of breast cancer recurrence. Yet, there was no difference in mastectomy rates or survival among the two cohorts, said Smith. Based on these findings, the NCCN adjusted its treatment guidelines, and radiation therapy following lumpectomy was no longer recommended. Smith then followed up this guideline-changing research with a population-based study, confirming the earlier findings with respect to breast cancer recurrence.

"The motivation for this new research was to do a similarly designed study with longer term follow up," said Smith. "We wanted to do a 10-year update, focusing specifically on the mastectomy question. The fundamental reason it was determined that women didn't need radiation was because the additional therapy did not change mastectomy rates."

For the population-based study, Smith and his colleagues derived a cohort of Medicare patients from the National Cancer Institute's Surveillance, Epidemiology and End Results (SEER) registry who would have been eligible for the 2004 study. The researchers identified 7,403 patients ages 70-79 treated with a lumpectomy for early-stage estrogen-positive breast cancer. All were diagnosed between 1992 and 2002, with follow up through 2007. Of the 7,403 women, 88 percent received radiation after their lumpectomy.

Within 10 years of their treatment, 6.3 percent of the women who did not receive radiation therapy had a mastectomy, likely because of a breast cancer recurrence, says Smith, compared to 3.2 percent who had the additional treatment. In patients with high-grade tumors, regardless of other factors such as age and/or tumor characteristics, radiation seemed to be highly beneficial.

The researchers also found a subset of women for whom radiation did not benefit, and thus could be omitted from care regimen: those 75- 79 years of age who had their lymph nodes assessed and did not have high-grade tumors.

"I think the national guidelines, while well intended and important, may gloss over the certain nuances needed for making critical decisions with patients," said Smith. "Our study may shed additional light on some of those nuances and provides data that physicians can use when talking to their patients about whether to go forward with radiation. Personally, having this data point, together with the previous findings, gives me the confidence to not routinely recommend radiation in women age 75 and over with non-high grade tumors."

Contact: Laura Sussman
University of Texas M. D. Anderson Cancer Center

Related medicine news :

1. Rhode Island Hospital study: Bariatric patients with obstructive sleep apnea fail to show symptoms
2. Study: Methodology of determining financial viability of social security
3. Study: Group yoga improves motor function and balance long after stroke
4. Rutgers study: Anxiety disorders in poor moms likely to result from poverty, not mental illness
5. New study: Elderly Medicare beneficiaries most satisfied with their health insurance
6. Study: Children abused by parents face increased cancer risk
7. Study: Kids with behavior problems, disabilities bullied more, more likely to bully others
8. Study: 21 percent of newly admitted nursing home residents sustain a fall during their stay
9. Study: Willingness to be screened for dementia varies by age but not by sex, race or income
10. STeleR study: Telerehab improves functioning after stroke
11. Study: Heart damage after chemo linked to stress in cardiac cells
Post Your Comments:
(Date:11/27/2015)... ... November 27, 2015 , ... The rapid speed at ... people age, more care is needed, especially with Alzheimer’s, dementia and other cognitive ... being overworked. The forgotten part of this equation: 80 percent of medical care ...
(Date:11/27/2015)... ... November 27, 2015 , ... An inventor, ... to dispense prescription medications at home, so he invented the patent-pending ELECTRONIC M.D. ... dispense prescription medications. In doing so, it could help to prevent potential overdose ...
(Date:11/27/2015)... ... 27, 2015 , ... Lizzie’s Lice Pickers just announced a special promotion that ... of their purchase of lice treatment product. In addition, customers will receive a complimentary ... spokesperson. “Finding lice is a sure way to ruin the holidays, so we encourage ...
(Date:11/27/2015)... ... November 27, 2015 , ... ProSidebar: Fashion is a set ... With ProSidebar: Fasion, video editors can easily add an informative sidebar to any ... opener. Utilize presets featuring self-animating drop zones, lines, bars, and text with the ...
(Date:11/27/2015)... ... November 27, 2015 , ... ... through sharing, the 2016 Building Better Radiology Marketing Programs meeting will ... on Sunday, March 6, 2016, at Caesars Palace in Las Vegas with a ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... FRANCISCO , November 26, 2015 ... billion by 2022, according to a new report by Grand ... Chronic Kidney Disease (CKD) which demands kidney transplantation is expected ... and cost effective substitute for organ transplantation. --> ... billion by 2022, according to a new report by Grand ...
(Date:11/26/2015)... --> ... att använda SyMRI för att hitta optimal ... med multipel skleros (MS) eller hjärntumörmetastaser och ... för att kunna använda SyMRI Research Edition ... kan man generera flera konstrastbilder från en ...
(Date:11/26/2015)... DUBLIN , Nov. 26, 2015 ... the addition of the "2016 Future Horizons ... Monitoring (TDM) Market: Supplier Shares, Country Segment Forecasts, ... offering. --> ... comprehensive analysis of the Italian therapeutic drug monitoring ...
Breaking Medicine Technology: