Arvind
As far as the staging it is best done with the pathology I think. They do use exams , and Ct and Pet scans as well. Radiation all depends on the stage , location and size and lymph node involvement, your surgeon and or an oncologist would usually discuss that with you . Do they say she needs Rad, therapy ? They say that the earlier the better as far as prognosis. but that is with everything. I am so sorry I can give you no specifics ..as much as I would love to ..But we are all different and each case is sooo specific and we all respond differently , I hope this helps and I am sure you will hear from many more people on here ... and there truley are alot of survivor stories , which I find quite encouraging myself. I hope I have helped a little bit.
Shar