Hi Pandora,
First, forgive me for not picking up on the fact that your husband has cancer. I'm going to PM you my email and suggest that he contact me directly. In the interim, has he surfed the NCI site? There is a wealth of information on staging and everything else you might think of concerning the disease.
In fact, they have detailed information for any cancer in two formats, one for patients and (other) lay people, and the same info for Medical professionals (in language more suitable for professionals) but as a general rule, most forms are staged by the number of lymph nodes involved.
If he has not yet acquired a copy of the Pathology report, have him do so immediately. It should contain all the information needed to determine stage (it will contain any available info on lymph node involvement.)
If he is not working out, he should get involved in an exercise program soonest, (like 6 months ago) because vigorous exercise helps immensely in dealing with the effects of chemo and radiation, and makes a HUGE difference in the quality of life while undergoing treatment.
Hope this isn't too far off topic, but I put this in the public because it's useful for anyone who might have to deal with the subject, and I'll tell you that, from my observations, most of us are going to have to deal with it sooner or later.