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TNM staging

(tē′ĕn-ĕm′)
n.
  1. A system of evaluation of tumors, based on three variables: primary tumor (T), regional nodes (N), and metastasis (M).
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.