The TNM system: only 3 letters for a rich but sometimes ambiguous language

Belleannée, Gève.

Annales de Pathologie 26(6): 435-44; Quiz 418

2006


ISSN/ISBN: 0242-6498
PMID: 17255903
Document Number: 602988
The T (tumor), N (node) and M (metastasis) staging system classifies tumors according to the anatomic extent. Since its first publication in 1940, the TNM classification has been periodically updated. This article reviews the main changes of the last edition and potential practical difficulties in interpretation of pN0 status, residual tumor, definition and classification of micrometastases and isolated tumoral cells, yTNM, use of X classification.

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