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Lymph node mapping
Pronunciation
Definition 1
The use of dyes and radioactive substances to identify lymph nodes that may contain tumor cells. Also called lymphatic mapping. (NCI Dictionary)
Definition 2
Lymph Node mapping, also known as sentinel lymph node (SLN) mapping is a procedure in which a radioactive tracer and a blue dye is injected around the tumor site. These two substances travel from the tumor and drain into the sentinel, or main, lymph node. Together they provide a marker for the location and presence of a sentinel lymph node, allowing discovery of minute metastases areas. (NCI Thesaurus)
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