The definition that I have of a T4 is that it is over 4cm and has started to invade the deep muscle tissue and/or bone. So i just assume that means it is poorly differentiated. What does focally invasive mean?

Stephen did receive radiation(XRT) on both sides to treat the nodes but I've read that radiation is not as effective in the nodes. False info?

Thanks for responding Gary. I can always count on you...

Kerry