![]() Supraclavicular (above the clavicle) nodes have cancer (axillary lymph nodes may or may not have cancer)Īdapted from American Joint Committee on Cancer materials. Internal mammary nodes and axillary lymph nodes have cancer OR Infraclavicular (under the clavicle) nodes have cancer (axillary lymph nodes may or may not have cancer) OR Supraclavicular (above the clavicle) nodes have cancer Internal mammary nodes have cancer plus 1 or more axillary lymph nodes have cancer ORĤ or more axillary lymph nodes have cancer plus internal mammary nodes have cancer or micrometastases (very small clusters of cancer cells) found on sentinel node biopsy OR Infraclavicular (under the clavicle) nodes have cancer OR Internal mammary nodes have cancer, but axillary lymph nodes don’t appear to have cancerġ0 or more axillary lymph nodes have cancer OR Internal mammary nodes have cancer, but axillary lymph nodes don’t have cancerĪxillary lymph nodes have cancer and are matted together or fixed to other structures (such as the chest wall) OR Internal mammary nodes have cancer or micrometastases found on sentinel node biopsyĪxillary lymph nodes have cancer, but can be moved around Micrometastases (very small clusters of cancer cells) ORġ–3 axillary lymph nodes have cancer AND/OR (only used when pathologic findings aren’t available)Īxillary and other nearby lymph nodes cannot be assessed (for example, they were not removed during surgery)Īxillary and other nearby lymph nodes cannot be assessed (for example, they were removed in the past)Īxillary and other nearby lymph nodes don’t have cancer or only have isolated tumor cells (individual cancer cells), when looked at under a microscopeĪxillary and other nearby lymph nodes don’t have cancer See Figure 4.4 for a drawing of the breast and lymph nodes. Enlarged nodes can be a sign the breast cancer has spread to the nodes.Ĭlinical lymph node status is only used when pathologic findings aren’t available. This is called clinical lymph node status. Clinical lymph node statusĪ physical exam (also called a clinical exam) can give a first estimate of lymph node status. Learn more about sentinel node biopsy and assessing lymph nodes. These results help determine breast cancer stage and guide treatment. A pathologist studies these nodes under a microscope to see if they contain cancer. Usually, a surgeon removes one or more axillary lymph nodes with a technique called sentinel node biopsy. This is called pathologic lymph node status. Pathologic lymph node statusĪ pathology exam is the best way to assess lymph node status. The following is a 3D interactive model showing parts of the breast and the axillary lymph nodes. The number of positive nodes guides treatment and helps predict prognosis. The more lymph nodes that contain cancer, the poorer prognosis tends to be. Prognosis (chance of survival) is better when cancer has not spread to the lymph nodes (lymph node-negative). Lymph node-positive means at least one axillary lymph node contains cancer.Lymph node-negative means none of the axillary lymph nodes contain cancer.Lymph node status shows whether or not the lymph nodes in the underarm area (axillary lymph nodes) contain cancer:
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