This information is based on AJCC Staging systems prior to which were primarily based on tumor size and lymph node status. Since the updated staging system for breast cancer now also includes estrogen receptor (ER), progesterone receptor (PR), and HER2 status, the stages may be higher or lower than previous staging systems. Stage 2 breast cancer means that the cancer is either in the breast or in the nearby lymph nodes or both. It is an early stage breast cancer. The stage of a cancer tells you how big it is and how far it has spread. It helps your doctor decide which treatment you need. Staging for breast cancer is very complex. Below is a simplified description.
Breast cancer is cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the nipple, a newly inverted nipple, or a red or scaly patch of skin. In those with distant spread of the disease, there may be bone pain, swollen lymph nodes, shortness of breath, or yellow skin. Breast cancer is a disease in which malignant (cancer) cells form in the tissues of the breast. Facts About Breast Cancer In The United States In , an estimated , new cases of invasive breast cancer will be diagnosed in women in the U.S. as well as 48, new cases of non-invasive (in situ) breast cancer.
For breast cancer there are 5 stages – stage 0 followed by stages 1 to 4. Often the stages 1 to 4 are written as the Roman numerals I, II, III and IV. Generally, the higher the stage number, the more the cancer has spread. Talk to your doctor if you have questions about staging. Paget’s disease is a sign that there might be breast cancer in the tissues behind the nipple. It is possible for someone to have Paget’s of the breast with no underlying cancer but this is less common. About half of the people diagnosed with Paget's disease have a lump behind the nipple. In 9 out of 10 cases, this is an invasive breast cancer.