| Ch 6 | Page 7 / 10 | |
| Classification cancer |
Classification according to stages | |
The various professional societies and institutions treating cancer have, for a long time, used the following classification according to cancer stage:
| Stage |
Description |
| Stage 0 | In situ (non invasive) cancer |
| Stage 1 | Very localised tumour with no remote metastases |
| Stage 2 | Locally limited extension with/without minimal node
satellite extension and with no remote metastases |
| Stage 3 | Locally advanced extension with/without major node satellite extension and with no remote metastases |
| Stage 4 | Locally advanced tumour and/or distant metastases |
Many different classifications are proposed according to tumour type.
These classifications are generally very close to strategic therapies but they are not as clear as TNM classification (discussed later). With time, however, all of these classifications have converged thus unifying the daily practice of professional societies and the more universal systematic TNM classification.
UICC (International Union Against Cancer) which promotes TNM classification regularly asks expert clinicians to revise the classifications according to new prognostic factors.
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