An ENT or Head & Neck surgeon at a comprehensive cancer center is your best bet.
See http://www.nccn.org/

I had an experienced dentist, oral surgeon and family doctor misdiagnose me. I paid out of pocket for the ENT for my original Dx.

If it IS cancer, early detection is critical. The lower the staging the higher the surivability.

Gary Allsebrook
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Dx 11/22/02, SCC, 6 x 3 cm Polypoid tumor, rt tonsil, Stage III/IVA, T3N0M0 G1/2
Tx 1/28/03 - 3/19/03, Cisplatin ct x2, IMRT, bilateral, with boost, x35(69.96Gy)
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"You are a mist that appears for a little while and then vanishes" (James 4:14 NIV)