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What is breast cancer? Breast cancer is a malignant tumor that forms from the uncontrolled growth of abnormal breast cells. Malignant tumors can invade and destroy surrounding tissue and spread to other parts of the body. Breast cancer usually affects tissues involved in milk production (ductal and lobular tissues). The cause of most breast cancers is unknown; however, a small percentage of breast cancers tend to cluster in families. These cancers can be caused by mutations in particular genes, such as BRCA1 or BRCA2. In some cases, genetic syndromes involving other cancers also include
How common is breast cancer? Each year, more than 211,000 cases of invasive breast cancer are diagnosed in women in the United States. Most breast cancers occur in women, but they can also develop in men. More than 1,600 cases of male breast cancer are diagnosed each year.
An estimated 5 percent to 10 percent of all breast cancers are hereditary. Some mutations in particular genes associated with breast cancer are more common among certain geographic or ethnic groups, such as people of Ashkenazi (central or eastern European) Jewish heritage and people of Norwegian, Icelandic, or Dutch a
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| | Web resources for "Breast Neoplasms" |
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| | Medical image(s) for "Breast Neoplasms" |
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nihseniorhealth.gov
Breast Cancer
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nihseniorhealth.gov
Breast Cancer
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nihseniorhealth.gov
Breast Cancer
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| | Medical News for "Breast Neoplasms" |
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| - (05/13/2010, HealthDay) |
| - (05/07/2010, HealthDay) |
| - (05/07/2010, HealthDay) |
| - (05/06/2010, HealthDay) |
| - (05/06/2010, Reuters Health) |
| - (05/04/2010, Reuters Health) |
| - (05/03/2010, HealthDay) |
| - (05/03/2010, HealthDay) |
| - (05/03/2010, HealthDay) |
| - (04/29/2010, Reuters Health) |
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