Mathew1,

There are all kinds of statistics out there, some outdated, and for different type cancers, including any negative aspects like extracapsular spread, lymphovasculsr invasion, Perineural invasion, positive margins, etc, and that they are even debatable, have different levels or involvement, and may not all be the same negativity, including distant metastases. It also depends if there is nodal involvement, if so, I heard the rates are cut in half, on both sides, half again. Sounds like persistent cancer. It could be from field cancerization from exposure to a carcinogen or other, metachronous or synchronous cancer. I don't know if I read a recurrence cuts the survival rate in half, I forget, and I looked, and had 5 recurrences myself. Good luck.