Tumour, Node and Metastasis (TNM) Staging System
The TNM Staging System is based on:
- the extent of the Tumour (T)
- the extent of spread to the lymph nodes (N) and
- the presence of distant metastasis (M).
A number is added to each letter to indicate the size or extent of the primary Tumour and the extent of cancer spread.For further information on the TNM Staging System, see the National Cancer Institute website.
This supporting information is also known by these names:
|formerly||Cancer TNM Staging|
|plural||TNM Staging Systems|
|fullname||Tumour, Node, Metastasis Staging System|