Lolita --

This link will take you to a clear explanation of the TNM staging system, showing you the meaning of each letter and number (scroll down the page that comes up when you click the link).

This is from the main Oral Cancer Foundation site, where there are pages and pages of useful information. It has its own search engine; a link to that search engine is at the bottom of each message board page (the very bottom right, in gold letters).

As an aside, you may want to consider starting your own thread when you have a question, like this one, not directly related to the topic of the post. Otherwise, what you are asking is likely to get lost as people reply to issues raised by the person who started the thread. If you start your own thread, all the answers should directly relate to what you want to know.

-- Leslie