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Join the MEAC Support Breast Cancer Awareness Month Group on Facebook
National Breast Cancer Awareness Month
FACTS about Breast Cancer: Center for Disease Control and Prevention
Not counting some kinds of skin cancer, breast cancer in the United States is-
- The most common cancer in women, no matter your race or ethnicity.
- The most common cause of death from cancer among Hispanic women.
- The second most common cause of death from cancer among white, black,
Asian/Pacific Islander, and American Indian/Alaska Native women.1
In 2011 an estimated-
- 230,480 women were diagnosed with breast cancer.
- 39,520 women died from breast cancer.1
What is breast cancer?
Breast cancer is a malignant tumor that starts from cells of the breast. A malignant tumor is a group of cancer cells that may grow into (invade) surrounding tissues or spread (metastasize) to distant areas of the body. The disease occurs almost entirely in women, but men can get it, too.
The normal breast
To understand breast cancer, it helps to have some basic knowledge about the normal structure of the breasts, shown in the diagram below.
The female breast is made up mainly of lobules (milk-producing glands), ducts (tiny tubes that carry the milk from the lobules to the nipple), and stroma (fatty tissue and connective tissue surrounding the ducts and lobules, blood vessels, and lymphatic vessels).
Most breast cancers begin in the cells that line the ducts (ductal cancers). Some begin in the cells that line the lobules (lobular cancers), while a small number start in other tissues.
The lymph (lymphatic) system
The lymph system is important to understand because it is one of the ways in which breast cancers can spread. This system has several parts.
Lymph nodes are small, bean-shaped collections of immune system cells (cells that are important in fighting infections) that are connected by lymphatic vessels. Lymphatic vessels are like small veins, except that they carry a clear fluid called lymph (instead of blood) away from the breast. Lymph contains tissue fluid and waste products, as well as immune system cells. Breast cancer cells can enter lymphatic vessels and begin to grow in lymph nodes.
Most lymphatic vessels in the breast connect to lymph nodes under the arm (axillary nodes). Some lymphatic vessels connect to lymph nodes inside the chest (internal mammary nodes) and those either above or below the collarbone (supraclavicular or infraclavicular nodes).
It is important to find out if the cancer cells have spread to lymph nodes because if they have, there is a higher chance that the cells could have also gotten into the bloodstream and spread (metastasized) to other sites in the body. The more lymph nodes that have breast cancer, the more likely it is that the cancer may be found in other organs as well. This is important to know because it could affect your treatment plan. Still, not all women with cancer cells in their lymph nodes develop metastases, and some women can have no cancer cells in their lymph nodes and later develop metastases.
Benign breast lumps
Most breast lumps are not cancerous (benign). Still, some may need to be sampled and viewed under a microscope to prove they are not cancer.
Fibrocystic changes
Most lumps turn out to be fibrocystic changes. The term fibrocystic refers to fibrosis and cysts. Fibrosis is the formation of scar-like (fibrous) tissue, and cysts are fluid-filled sacs. Fibrocystic changes can cause breast swelling and pain. This often happens just before a woman's menstrual period is about to begin. Her breasts may feel lumpy and, sometimes, she may notice a clear or slightly cloudy nipple discharge.
Other benign breast lumps
Benign breast tumors such as fibroadenomas or intraductal papillomas are abnormal growths, but they are not cancerous and do not spread outside of the breast to other organs. They are not life threatening. Still, some benign breast conditions are important because women with these conditions have a higher risk of developing breast cancer.
This information can be found in detail on the America Cancer Society's website at http://www.cancer.org/Cancer/BreastCancer/DetailedGuide/breast-cancer-what-is-breast-cancer.
Can Men Get Breast Cancer?
Men can get breast cancer. In men, breast cancer can happen at any age,
but is most common in men who are between 60 and 70 years old.
Male breast cancer is not very common. For every 100 cases of breast cancer, less than 1 is in men.
For men, signs of breast cancer and treatment are almost the same as for women.
For more information, visit the National Cancer Institute (NCI) - General Information About Male Breast Cancer.
Reference
1 http://www.cancer.org/Research/CancerFactsFigures/BreastCancerFactsFigures/breast-cancer-facts-and-figures-2011-2012.
Breast Cancer Facts- Susan G. Komen Breast Cancer Foundation
For more information on breast cancer, please visit the following websites:
American Cancer Society
Susan G. Komen Breast Cancer Foundation
National Breast Cancer Awareness Month
Centers for Disease Control and Prevention- Breast Cancer
Breast Cancer.org
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