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The concept of the sentinel lymph node is important because of the advent of the sentinel lymph node biopsy technique, also known as a sentinel node procedure. This technique is used in the staging of certain types of cancer to see if they have spread to any lymph nodes, since lymph node metastasis is one of the most important prognostic signs .
Lymph node biopsy is a test in which a lymph node or a piece of a lymph node is removed for examination under a microscope (see: biopsy). The lymphatic system is made up of several lymph nodes connected by lymph vessels. The nodes produce white blood cells (lymphocytes) that fight infections. When an infection is present, the lymph nodes swell ...
The sentinel node market experienced high growth in the early and mid-1990s, starting with melanoma sentinel node surgical search and breast cancer sentinel node staging; both are currently considered standards of care. [4] The use of a radioactive tracer, rather than a coloured dye, was proposed in 1984. [5] [6]
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 ...
For clinical stages I and II breast cancer, axillary lymph node dissection should only be performed after first attempting sentinel node biopsy. [4] If cancer cells are found in the nodes, it increases the risk of metastatic breast cancer. Another method of determining breast cancer spread is to perform an endoscopic axillary sentinel node biopsy.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 January 2025. Cancer that originates in mammary glands Medical condition Breast cancer An illustration of breast cancer Specialty Surgical Oncology Symptoms A lump in a breast, a change in breast shape, dimpling of the skin, fluid from the nipple, a newly inverted nipple, a red scaly patch of skin on ...
The superior-most node is situated in the groin, deep to the inguinal ligament, and is termed the Cloquet's node (also Rosenmuller's node). [7] It can instead be considered as the inferior-most of the external iliac lymph nodes. [8] [citation needed] Cloquet's node is also considered as a potential sentinel lymph node. [7] [9]
Sentinel lymph node biopsy is the analysis of a few removed sentinel nodes for the presence of cancerous cells. A radioactive substance is used to dye the sentinel nodes for easy identification and removal. [2] If cancer is detected in the sentinel node then further treatment is needed.