how does breast cancer develop?

Answer 1

There is so much information on this at People Living With Cancer Website....They have a Guide to Breast Cancer. Please check out the website at http://www.plwc.org and click on Breast Cancer. This will help you find information and answers to how Breast Cancer Develops. It would take pages if I typed or pasted any of it here. Hope this helps. Have a fanstastic week! :)

Answer 2

Recently, scientists have begun to isolate genes responsible for hereditary breast cancer. In 1994 the gene, named Breast Cancer 1 (BRCA-1), was finally isolated in Chromosome #17, one of the 23 pairs of chromosomes found in most human cells. An altered BRCA-1 has been linked to the development of breast and ovarian cancer.
In 1995, scientists developed experimental tests for detecting several recently discovered cancer genes, including BRCA-1. However preliminary studies have shown that testing positive for an altered BRCA-1 gene does not necessarily mean a woman will develop breast cancer. At least 15% of the women who carry the altered gene will never develop the disease. Scientists have no way of knowing yet which women fall into that category. In addition, because BRCA-1 alterations occur in many different places scattered throughout the gene, developing an accurate test will be very difficult to do.

The altered BRCA-1 gene appears in only 5% of the 182,000 breast cancer cases that develop. If a woman tests negative (that is, she does not have the altered gene), this does not necessarily mean she will be free of breast cancer during her lifetime.

Scientists also have recently located the gene BRCA-2 on Chromosome #13. Like BRCA-1, BRCA-2 appears to be a cancer-causing gene when altered. BRCA-2 appears to account for as many cases of breast cancer as does BRCA-1. BRCA-2 apparently triggers breast cancer in males as well as in females. cancer of any kind start out as cells ...A general term for more than 100 diseases in which there is an uncontrolled, abnormal growth of cells. Cancer cells can spread through the bloodstream and lymphatic system to other parts of the body.

Answer 3

Breast cancer developes when mammary cells begin to grow abnormally.

Answer 4

One of the billions of cells mutates, starts to grow uncontrollably, evades the immune system, becomes strong by recruiting blood vessels for nutrients, etc.