Navigation Links
APBI associated with more mastectomies, toxicities, complications, compared to traditional radiation
Date:5/1/2012

Houston, TX - Accelerated partial breast irradiation (APBI) brachytherapy, the localized form of radiation therapy growing increasingly popular as a treatment choice for women with early-stage breast cancer, is associated with higher rate of later mastectomy, increased radiation-related toxicities and post-operative complications, compared to traditional whole breast irradiation (WBI), according to researchers from The University of Texas MD Anderson Cancer Center.

The retrospective study, appears in the current issue of JAMA; it was first presented in the CTRC-AACR San Antonio Breast Cancer Symposium. Benjamin Smith, M.D., assistant professor in MD Anderson's Department of Radiation Oncology, is the study's senior author.

"Our study compared the two radiation therapy techniques available to women with early-stage breast cancer. We found that women treated with accelerated partial breast irradiation therapy have a two-fold increased risk for subsequent mastectomy, most likely because of tumor recurrence or local complications, as well as an increased risk for post-operative and radiation-related complications," said Smith.

There are numerous types of APBI; the MD Anderson study only looked at the brachytherapy technique, which is a form of radiation treatment involving insertion of a catheter containing a radioactive source to kill breast cancer cells that may remain after lumpectomy surgery. A specialized catheter is surgically inserted into the cavity left behind after tumor removal. APBI brachytherapy is performed a few weeks after a lumpectomy, twice daily over a course of five to seven days.

APBI brachytherapy has grown in popularity over the past decade, since earlier studies showed generally low cancer recurrence rates, though most prior studies have not directly compared the outcomes of APBI brachytherapy to traditional radiation therapy, explained Smith.

The first commercially-available single catheter to deliver partial breast irradiation was approved by the FDA in 2002, escalating APBI's use, said Ben Smith.

The MD Anderson study was based on analysis of claim forms filed by 92,735 Medicare beneficiaries nationwide, who were diagnosed with cancer between 2003 and 2007.

"In our study of Medicare patients, we found a consistent increase in APBI brachytherapy, from less than 3.5 percent in 2003 to 13 percent in 2007. It's our guess that this trend has continued," said Smith.

There are benefits to the practicality APBI offers women, noted Smith.

"For whole breast irradiation, the standard treatment time is between five and seven weeks, but studies have shown that some women experience delays or have obstacles completing their course of radiation. Treatment delays and incompletion are known to increase the risk of cancer recurrence in the breast. APBI brachytherapy is attractive because it has the potential to address those issues, because treatment only lasts one week."

However, it's also an invasive procedure with the greater potential for side-effects that are not associated with a non-invasive therapy, such as WBI, noted Smith.

For the retrospective population-based study, the MD Anderson team used Medicare claims to examine the treatment history of 92,735 women age 67 and older diagnosed with early-stage, invasive breast cancer between 2000 and 2007. All of the women were treated with breast-conserving surgery followed by either APBI, delivered by brachytherapy, or traditional radiation therapy.

The researchers analyzed for effectiveness of radiation (defined as the need for a later mastectomy), post-operative complications (infectious and non-infectious), and post-radiation complications (breast pain, fat necrosis and rib fracture).

At five years, the incidence of mastectomy was statistically significantly higher in the APBI brachytherapy-treatment group compared to that of the WBI, 4 percent and 2.2 percent, respectively. APBI brachytherapy was also found to be associated with a higher incidence of acute and late toxicities, compared to those of WBI - infectious complications, 16 and 10 percent, respectively; non-infectious complications, 16 percent and 9 percent, respectively; - and post-radiation complications - five-year incidence of rib fracture, 4.5 and 3.6 percent, respectively; fat necrosis, 8 and 4 percent, respectively; and breast pain, 15 percent and 12 percent, respectively.

The researchers note the study's limits, including that it was not randomized, the relatively-short follow up of patients and limited details regarding tumor characteristics were available.

Given the findings, communication between the patient and her physician is paramount so that a woman with breast cancer can make an informed, personalized decision, said Thomas A. Buchholz, M.D., professor and head of the Division of Radiation Oncology at MD Anderson, and an author on the paper.

"This is a very important, well-designed study in a large cohort of patients and provides the first comparison of these two popular radiation techniques after breast-conserving surgery," said Buchholz, also an author on the study. "It's important to note that in both groups, we found a relatively low risk of recurrence. Still, we have a responsibility to discuss potential risks and benefits with our patients, while we await definitive results from randomized trials."

National randomized trials comparing APBI brachytherapy to WBI are ongoing. MD Anderson will continue offering APBI to interested patients in the context of ongoing institutional and multi-institutional clinical protocols, says Buchholz.


'/>"/>

Contact: Laura Sussman
lsussman@mdanderson.org
713-745-2457
University of Texas M. D. Anderson Cancer Center
Source:Eurekalert  

Related medicine news :

1. Certain genetic profiles associated with recurrence-free survival for non-small cell lung cancer
2. Certain pain medications do not appear to be associated with skin cancer risk
3. News brief: ALDH associated with worse overall survival in patients with pancreatic adenocarcinoma
4. New research shows emotional impact of low sexual desire and associated distress
5. Increased HAART coverage associated with 50 percent drop
6. Pretreatment SUV associated with head and neck cancer treatment outcomes, may help decide treatment plans
7. New developments in nanotechnology tackle the 2 biggest problems associated with chemotherapy
8. MedQuist Launches EHR Integration for Dictations Associated with Template-based Clinical Documentation
9. Hormone thought to slow aging associated with increased risk of cancer death
10. Common osteoporosis drugs are associated with a decrease in risk of breast cancer
11. Coffee Drinking and Caffeine Associated With Reduced Risk of Hospitalization for Heart Rhythm Disturbances
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
APBI associated with more mastectomies, toxicities, complications, compared to traditional radiation
(Date:4/28/2016)... ... April 28, 2016 , ... ... the open availability of a new CDISC standard, Clinical Trial Registry (CTR) ... trials. This innovative standard will make it possible to build applications that ...
(Date:4/28/2016)... ... April 28, 2016 , ... Trinity Health, one ... a leading force in the fight to reduce tobacco use and its deadly ... can help reduce tobacco use. The initiative brings together two organizations committed to ...
(Date:4/28/2016)... ... April 28, 2016 , ... In 2011, TIME magazine named Herr the “Leader ... biomechatronics, technology that marries human physiology with electromechanics. He continues that work as Director ... Founder of BionX , a leader in the field of prosthetic devices. , ...
(Date:4/28/2016)... ... April 28, 2016 , ... Cognizin® Citicoline is one of ... in the Healthy Ageing category, Cognizin® is being considered for this prestigious honor ... can include everything from antioxidants, lipids, proteins, and botanicals. NutraIngredients will choose a ...
(Date:4/28/2016)... ... ... Card reminds us that May is National Stroke Awareness Month. According to the Centers ... in the United States; someone has one every 40 seconds. Annually, almost 800,000 strokes ... old. A stroke is when blood flow to the brain is blocked or when ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... April 27, 2016 Shire plc (LSE: ... Poulton , Chief Financial Officer, will present at the Deutsche ... MA on Wednesday, May 04, 2016, 10:00 am ... be available on the Presentations and Webcasts section of Shire,s ... the webcast will be available on this same website for ...
(Date:4/27/2016)... 27, 2016 Oasmia Pharmaceutical ... of a new generation of drugs within human ... results for Paclical/Apealea in the Phase III study ... epithelial ovarian cancer. These preliminary results showed non-inferiority ... with carboplatin versus Taxol in combination with carboplatin. ...
(Date:4/27/2016)... , April 27, 2016 ... reach USD 2.06 billion by 2022, according to ... Increasing consumer awareness towards a healthy lifestyle is ... seven years.      (Logo: http://photos.prnewswire.com/prnh/20150105/723757 ... coupled with rising health treatment expenditure has urged ...
Breaking Medicine Technology: