Navigation Links
Breast Cancer Recurrence Rates Appear Different When Radiation Used
Date:4/30/2011

By Kathleen Doheny
HealthDay Reporter

FRIDAY, April 29 (HealthDay News) -- Patients with early stage breast cancers are commonly treated with surgery or surgery plus radiation, and radiation is widely believed to cut local recurrence rates by about half.

Now, researchers report that they have found that surgery plus radiation does cut local recurrences, but appears to increase the risk of invasive breast cancers later.

"I don't want people to think radiation is bad," said study author Dr. Janie Weng Grumley, a fellow in breast oncology at the University of Southern California Keck School of Medicine. "We know there is less recurrence with radiation."

Grumley's team evaluated 1,014 patients with early breast cancer, known as ductal carcinoma in situ. Of these, 651 had surgery alone while 363 had surgery plus radiation.

The 10-year probability of any recurrence at the same site was 30 percent for the surgery group and 18 percent for the combination group. However, when cancer does return in those who get the combination treatment, her study showed the patterns are different.

"The patients who got radiation recurred a lot later than the patients who didn't," she said. The average time to the cancer recurring in the same site was 7.5 years for those who had radiation plus surgery and 4.4 years for those who had surgery only.

However, "surgery plus radiation had more invasive recurrence," she said. Thirty-seven percent of the surgery group had an invasive recurrence at the same site, but 57 percent of the combination group did, she said.

While 28 percent of the recurrences were in different quadrants of the breast for the combination patients -- essentially new cancers -- only 10 percent of the recurrences in surgery-only patients were in new quadrants.

The survival rate among the surgery group at 10 years was 99.7 percent, compared to 98.3 percent for the combination group, the study found.

The study leaves many questions unanswered. "Is the radiation causing more new cancers?" Grumley wondered.

The research also has several limitations: The average follow-up for the surgery group was six years, while the average follow-up for the combination group was a little over nine years. "One could say the follow-up is longer, and maybe we would find the same thing if we followed the surgery-only group," Grumley said.

The findings were slated to be presented Friday at the American Society of Breast Surgeons meeting, in Washington, D.C.

The finding should be considered very preliminary, said Dr. Otis Brawley, chief medical and scientific officer for the American Cancer Society and professor of oncology and epidemiology at the Emory University School of Medicine, in Atlanta.

"I would say you have to look at all abstracts from scientific meetings with a grain of salt," Brawley said. The research has not yet been exposed to rigorous review and critique by the researchers' colleagues, he said. If a study is the first of its kind, it must be replicated by others to confirm the finding.

Grumley said the message for now is that women should be aware of the different patterns found. "Really, the message should be we should monitor these patients beyond the [typical] five years," she added.

More information

To learn more about ductal carcinoma in situ, visit the U.S. National Institutes of Health.

SOURCES: Otis Brawley, M.D., chief medical and scientific officer, American Cancer Society, and professor, oncology and epidemiology, Emory University School of Medicine, Atlanta; Janie Weng Grumley, M.D., fellow, breast oncology, University of Southern California Keck School of Medicine; April 29, 2011, presentation, American Society of Breast Surgeons meeting, Washington, D.C.


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Paxil Blocks Tamoxifen, Lowers Survival Odds Against Breast Cancer
2. Low forms of cyclin E reduce breast cancer drugs effectiveness
3. Racial disparities persist in the diagnosis of advanced breast cancer and colon cancer in the U.S.
4. For Some Breast Cancer Patients, Shorter Radiation Works Well
5. Short-term radiation therapy successful on breast cancer
6. Few Women at High Risk for Breast Cancer Take Tamoxifen
7. Hormone May Prevent Aggressive Breast Cancer
8. MSU researcher linking breast cancer patients with alternative therapies
9. MRI May Not Add Value to Routine Breast Cancer Care
10. Breast Cancer Stats Differ Racially Despite Similar Mammogram Rates
11. Businesses Rally Big Efforts to Benefit the Susan G. Komen Phoenix Affiliates Fight Against Breast Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Breast Cancer Recurrence Rates Appear Different When Radiation Used
(Date:6/27/2016)... CA (PRWEB) , ... June 27, 2016 , ... ... College District , the only authorized OSHA Training Institute Education Center headquartered in ... by protecting their workers from extreme heat at their worksites. Employers with ...
(Date:6/27/2016)... Viejo, California (PRWEB) , ... June 27, 2016 , ... ... are fully customizable inside of Final Cut Pro X," said Christina Austin - CEO ... another unique style. Final Cut Pro X users can now reveal the ...
(Date:6/27/2016)... ... June 27, 2016 , ... TherapySites, ... its affiliation with Tennessee Counseling Association. This new relationship allows TherapySites ... Tennessee Counseling Association, adding exclusive benefits and promotional offers. , "TCA is extremely ...
(Date:6/27/2016)... (PRWEB) , ... June 27, ... ... in the patient payment industry today announced its strategic partnership with Connance, ... system workflows. , The two companies’ proven, proprietary technology combine to provide ...
(Date:6/27/2016)... ... 27, 2016 , ... A revolution is underway. Brooklyn-based ... experience for the millions of people who require these medical transport services annually. ... through the use of technology. Now, SmartEMS has put forth an industry-changing app ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... 2016 One of Australia,s successful ... of a new biotechnology company, Noxopharm Limited [ABN 50 608 966 ... and to list on the ASX. Noxopharm is a ... enter a Phase 1 clinical study later this year. ... of the biggest problems facing cancer patients - the ability of ...
(Date:6/26/2016)... Jazz Pharmaceuticals plc (Nasdaq: JAZZ ) announced ... Act of 1976, as amended ("HSR"), with respect to ... CPXX ) expired effective June 24, 2016, ... previously announced on May 31, 2016, Jazz Pharmaceuticals and ... Jazz Pharmaceuticals has commenced a tender offer for all ...
(Date:6/26/2016)...  VMS Rehab Systems, Inc. ( www.vmsrehabsystemsinc.com ) reported ... required to build a strong and stable market for ... on the OTC Markets-pink current trading platform. ... are seeing an anomaly in market trading activities that ... the Company, but shareholders and market players as well. ...
Breaking Medicine Technology: