I had scc with unknown primary and ent did surgery just to remove some samples from my throat for biopsy. Turned out it was on my tonsil. Fortunately, that little hunting expedition was the only surgery I had. Sounds like that may be what your 2nd surgery will be.
A CCC is a comprehensive cancer center where cancer is all they do. There is a list of CCC's on here somewhere, I think originally posted by davidCPA.

David R. 65 yr old male non-smoker, light drinker, stage 3 or 4, depending on which doc you ask, scc rt. tonsil, 2 nodes, 7 weeks radiation and chemo. No surgery. Teatment ended 3/20/08. PET scan 8/08 showed no cancer.
And now, as of oct, 2010, caregiver to wife, Linda, with breast cancer.
May, 2013, Linda diagnosed with stage 3 ovarian cancer. Enuf already.