Sentinel Lymph Node Mapping
Definition
Sentinel lymph node mapping is a method of determining whether cancer has metastasized (spread) beyond the primary tumor and into the lymph system. The mapping procedure is used in conjunction with sentinel lymph node biopsy or dissection.
Purpose
The lymph system is the body's primary defense against infection. Lymph vessels carry clear, slightly yellow fluid called lymph that contains and proteins to help rid the body of infection. Lymph nodes are small, bean-shaped collections of tissue found along the lymph vessels. Cancer cells can break off from the original tumor and spread through the lymph system to distant...
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