The purpose of a sentinel node biopsy is to check for cancer spread without removing multiple lymph nodes unnecessarily. This minimally invasive cancer lymph node sampling technique has become the gold standard for identifying the spread of cancer.
What Is a Sentinel Node Biopsy?
Sentinel lymph node biopsy (SLNB) is a procedure used to determine whether cancer has spread to the lymph nodes, which are critical structures in the body’s immune system. Lymph nodes filter harmful substances and fight infections, but they can also be entry points for cancer to spread from a primary tumor to other parts of the body. The sentinel nodes are the first lymph nodes to which cancer cells are likely to spread from the primary tumor, making them key indicators in staging and treatment decisions.