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U.S. National Institutes of Health National Cancer Institute
Dictionary of Cancer Terms
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TNM staging system (... STAY-jing SIS-tem)

 A system for describing the extent of cancer in a patient’s body. T describes the size of the tumor and whether it has invaded nearby tissue, N describes any lymph nodes that are involved, and M describes metastasis (spread of cancer from one body part to another).

Previous Definitions:TLK286, TM, TNF, TNF-bound colloidal gold, TNFerade
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