What is Breast Cancer? What is the Cause of it?

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What is Breast Cancer? What is the Cause of it? Breast cancer is cancer cells that develop in the breast of a woman. The most common type of breast cancer is ductal carcinoma in situ. The cancer cells develop in the milk ducts of the breast. Doctors and researchers do not exactly know the cause of cancer. All they know is that it usually occurs when a cell’s DNA is damaged. When cells in the breast start to develop abnormally they begin to develop quicker than the normal cells. They also keep multiplying, causing them to metastasize throughout the breast to the persons lymph nodes and sometimes other parts of the body. Sometimes breast cancer occurs in the lobules, but most of the time it starts in the invasive ductal carcinoma. Breast…show more content…
Stage 0, carcinoma in situ, has 3 different types of carcinoma in situ. The first type is Ductal carcinoma in situ. In this condition, there are abnormal cells that are lining the duct of the breast, but, has not metastasized to other parts of the body. The second type is Lobular carcinoma in situ. There are abnormal cells found in the lobules of the breast in this condition. Cancer.gov says that having LCIS in one breast increases the risk of having breast cancer in one or both breasts. The last type is Paget disease, where abnormal cells are only found in the nipple. Next, is stage 1. In stage one we find that the person, has developed cancer. The stage is split into states IA and IB. In stage IA, the cancer cell is 2 centimeters or smaller, while in stage IB there are chunks of cancer cells smaller than 2 millimeters. In stage IA the cancer hasn’t spread but in stage IB it’s found in the lymph nodes. Stage 2 also is split into two parts, IIA and IIB. In IIA the tumor has either not been found in the breast, but 1 to 3 axillary lymph nodes or in the lymph nodes near the breastbone (Cancer.gov). Or, the tumor is no bigger than 5 centimeters and has not advanced to the lymph nodes. In stage IIB there are cancer cells in the lymph nodes, they haven’t spread to the lymph nodes, or they have spread to 1 to 3 axillary lymph nodes or in the lymph nodes near the breastbone (Cancer.gov).
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