Featured Research

from universities, journals, and other organizations

Higher incidence of secondary breast cancer seen among black women regardless of age

Date:
September 19, 2011
Source:
American Association for Cancer Research
Summary:
The overall incidence of breast cancer is generally higher among white women than black women; however, the incidence of a second breast cancer in the opposite breast is higher among black women, according to a new study.

The overall incidence of breast cancer is generally higher among white women than black women; however, the incidence of a second breast cancer in the opposite breast is higher among black women, according to a study presented at the Fourth AACR Conference on The Science of Cancer Health Disparities, held here Sept. 18-21, 2011.

When cancer is diagnosed in women younger than 45 years old, the incidence of primary breast cancer is higher among blacks than among whites and the cancer tends to be more aggressive.

"When the disease does occur in blacks early on, it tends to be more aggressive, more likely to be estrogen-receptor negative and it is more likely to cause death," said lead researcher Nsouli-Maktabi Hala, a Ph.D. graduate of The George Washington University.

The researchers also found that when cancer is diagnosed at an older age, the incidence is higher among white women. Since most breast cancers are diagnosed in older women, the overall incidence is higher in whites, explained Maktabi.

"While the incidence of breast cancer is generally higher among whites for first-time diagnosis, we found the incidence of the second contralateral diagnosis was higher among blacks," said Maktabi. "This was unexpected -- blacks usually have a higher mortality rate than whites from the first cancer, so you would expect blacks to have lower rates of second cancers."

"Usually, about 4 percent of all breast cancer patients will present with a second primary cancer contralaterally," Maktabi added.

The researchers used the Surveillance Epidemiology and End Results Registry 9 data to evaluate breast cancer incidence among 415,664 white women and 39,887 black women diagnosed with primary breast cancer at age 19 or older and possible development of a second cancer in the opposite breast.

Results showed that 22,290 (40.7 percent) developed a second primary breast cancer, of which 18,142 (4 percent) occurred in the opposite breast. Incidence of second primary cancers of the opposite breast was higher among black women, and 15,101 (83.2 percent) of second contralateral cancers developed in those who were diagnosed with first breast cancer at age 45 or older.

In addition, contralateral breast cancer tended to occur within the first two years of the primary breast cancer diagnosis.

"This should alert the physician to watch patients very carefully," Maktabi said. "A cancer in one breast should lead to a careful of examination of the other breast over a long period, just in case a cancer develops."

Additionally, average age of the second primary contralateral cancer diagnosis tended to be lower in blacks (59 years of age) than in whites (67 years of age).


Story Source:

The above story is based on materials provided by American Association for Cancer Research. Note: Materials may be edited for content and length.


Cite This Page:

American Association for Cancer Research. "Higher incidence of secondary breast cancer seen among black women regardless of age." ScienceDaily. ScienceDaily, 19 September 2011. <www.sciencedaily.com/releases/2011/09/110919131605.htm>.
American Association for Cancer Research. (2011, September 19). Higher incidence of secondary breast cancer seen among black women regardless of age. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2011/09/110919131605.htm
American Association for Cancer Research. "Higher incidence of secondary breast cancer seen among black women regardless of age." ScienceDaily. www.sciencedaily.com/releases/2011/09/110919131605.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com
Sierra Leone in Lockdown to Control Ebola

Sierra Leone in Lockdown to Control Ebola

AP (Sep. 21, 2014) Sierra Leone residents remained in lockdown on Saturday as part of a massive effort to confine millions of people to their homes in a bid to stem the biggest Ebola outbreak in history. (Sept. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins