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The sentinel lymph node is the hypothetical first lymph node or group of nodes draining a cancer. In case of established cancerous dissemination it is postulated that the sentinel lymph nodes are the target organs primarily reached by metastasizing cancer cells from the tumor .
A sentinel node biopsy can establish cancer staging of the axilla if there are positive lymph nodes present. [5] It is also less risky than performing a lymphadenectomy, having fewer side effects and a much lower chance of causing lymphedema. [5] If cancer is not present in the sentinel lymph nodes, then the axillary lymph node dissection ...
The concept of sentinel lymph node biopsy in breast surgery is one of the major contributions of Giuliano to modern day breast cancer management. [3] He inherited the idea of sentinel node biopsy from his mentor Morton in early 1990s, who at that time was using the technique for skin melanoma management.
The lymph nodes located in the axilla area that are affected by breast cancer are called the guardian or sentinel lymph nodes. Lymph nodes are essential to the lymphatic/immune system due to their main function of filtering unrecognized particles and molecules. [ 4 ]
The sentinel lymph node is the first node that drains the tumor, and subsequent SLN mapping can save 65–70% of patients with breast cancer from having a complete lymph node dissection for what could turn out to be a negative nodal basin.
Sentinel lymph node biopsy (SLNB) or axillary lymph node dissection (ALND) may be used to determine if the cancer has progressed away from the breast and into other parts of the body. [10] Sentinel lymph node biopsy is the analysis of a few removed sentinel nodes for the presence of cancerous cells.
His 2005 research in collaboration with AE Giuliano and others advocated for sentinel node biopsy (SNB) as the preferred option over routine axillary lymph node dissection (ALND) for early-stage breast cancer patients with negative axillary nodes, stressing its safety, accuracy, and the necessity of ALND if metastases are found. [19]
Sentinel lymph node (SLN) dissection is the identification of the main lymph node(s) draining the tumor, with the aim of removing as few nodes as possible, decreasing the risk of adverse effects.