Pursue it until you are satisfied and have a multiple opinion that is consistent. Take no chances! My first diagnosis by an ENT was way off base. Thank goodness I found an oral surgeon (Practiced with my dental group) that was persistent but even the first couple of biopsies were negative! Once he figured it out he got the ball rolling fast with some great Doctors. Best of luck to you and keep us posted.
Steve

SCC right side BOT/FOM; DX 1-25-06; Neck dissection/25% of tongue removed 2-17-06. Stage 2 Recurrence 7-06: IMRTX35 & 3X Cisplatin ended 10-18-06. Tumor found 03/18/13; Partial Glossectomy 03/28/13 left lateral tongue. Nov. 2014; headaches,lump on left side of throat. Radical Neck Dissection 12-17-14; Tumor into nerves/jugular; Surgery successful, IMRTX30 & 7X Erbotux. Scan 06-03-15; NED! 06-02-16; Mets to left Humerus bone and lesion on lungs-here We go again! Never, Ever Give Up!

**** PASSED AWAY 10/8/16 ****