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The axillary lymph nodes are located under the arm. Axillary node dissection is performed to determine if cancer has spread beyond the breast. Cancer cells found in the lymph nodes suggest that it may have spread to other parts of the body and the patient may need more aggressive treatment. The results of this test help the patient and physician plan the best course of therapy.

An axillary node dissection may be done at the same time as a lumpectomy or a mastectomy. It may be scheduled follow...Read the full article