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Breast Cancer Stages. After someone is diagnosed with breast cancer, doctors will try to figure out if it has spread, and if so, how far. This process is called staging. The stage of a cancer describes how much cancer is in the body. It helps determine how serious the cancer is and how best to treat it.
Breast cancer is a disease in which abnormal breast cells grow out of control and form tumours. If left unchecked, the tumours can spread throughout the body and become fatal. Breast cancer cells begin inside the milk ducts and/or the milk-producing lobules of the breast.
Generally, stage 0 breast cancer is defined as abnormal cells in the breast that have not started to spread to other tissues. Breast cancer stages 1, 2, and 3 tumors are cancers that may have started to spread to the lymph nodes and grow larger.
Breast cancer stage describes the extent of the cancer within your body. The stage of your breast cancer helps plan your treatment. Breast cancer stage is the most important factor for prognosis (chance of survival). In general, the earlier the stage, the better the prognosis will be.
Breast cancers that have spread into surrounding breast tissue are known as invasive breast cancers. Most breast cancers are invasive, but there are different types of invasive breast cancer. The two most common types are invasive ductal carcinoma (IDC) and invasive lobular carcinoma (ILC).
Get the information you need to understand your breast cancer diagnosis, such as the hormone receptor and HER2 status, tumor grade, and cancer stage.
Commonly-Used Cancer Terms. Metastasis What happens when cancer spreads from its primary site to other areas of the body. It doesn’t happen to everyone with breast cancer, but when it does, it ...