Stages of Breast Cancer
Cancer stage is based on the size of the tumor, whether the cancer is invasive or non-invasive, whether lymph nodes are involved, and whether the cancer has spread beyond the breast. Breast Cancer Stages are the different stages in which the Breast Cancer can occur. The chances of making a full recovery are better when diagnosis is sooner.
Stage 0 is Carcinoma in situ
- It is used to describe non-invasive breast cancers, such as DCIS and LCIS.
- It occurs when abnormal cells have appeared inside the linings of the breast ducts. They have not spread yet.
Stage 1 Early stage invasive breast cancer
- The tumor measures up to 2 centimeters.
- No lymph nodes are involved.
- It has not spread to other parts of the body.
Stage 2(a) Breast Cancer
- Cancer is found in auxillary lymph nodes but there is no tumor found in the breast; or
- The tumor is 2 centimeters or smaller and has spread to the axillary lymph nodes; or
- The tumor is larger than 2 centimeters but not larger than 5 centimeters and has not spread to the axillary lymph nodes.
Stage 2(b) Breast Cancer
- The tumor is larger than 2 but no larger than 5 centimeters and has spread to the axillary lymph nodes, OR
- tTe tumor is larger than 5 centimeters but has not spread to the axillary lymph nodes.
Stage 3 Breast Cancer
- In stage 3(a) the tumor is larger than two centimeters but smaller than five centimeters and has spread to up to nine auxiliary underarm lymph nodes.
- In stage 3(b) the cancer has spread to tissues near the breast including the skin, chest wall, ribs, muscles, or lymph nodes in the chest wall or above the collarbone.
Stage 4 Breast Cancer
It represents a full spreading of the cancer to the other organs of the body, including the bones, liver, lungs, or the brain.
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