Sentinel Node Removal Sentinel lymph node dissection, performed by a surgeon, is a newer surgical technique for women with small spreading breast cancers. These women are least likely to have cancer in the lymph nodes under their arms (axillary nodes). This procedure is an alternative to removal of multiple axillary lymph nodes (see lymph node dissection) and may prevent more invasive surgery and side effects. It is known that the sentinel lymph node is the first node breast cancer strikes. Whether or not it contains cancer cells is predictive of whether breast cancer has spread to the lymphatic system. Therefore, if this node is clean, it is more likely that other nodes are unaffected. In reality, is not uncommon for the surgeon to remove a cluster of two or three nodes, including the sentinel node and those closest to it. Sentinel lymph node dissection may be done with IV sedation or general anesthesia. Because the procedure is much less invasive than with lymph node dissection, there are fewer complications such as lymphedema, numbness, scarring, and/or swelling. Another benefit is that recovery is more rapid and there is much less pain and discomfort postoperatively. Sentinel node removal is also done as treatment and diagnosis of malignant melanoma. Patients should consult their physician for a complete explanation of the procedure and its associated risks and complications.