Hmmmm . . . I think you should follow up with an ENT. My cancer was on my left ventral tongue, and it is a common spot for scc.

As far as I know biopsies like yours are accurate, but as you've seen in Shauneen's reply, perhaps not always? And, things can change. You obviously have had some kind of irritation there. You don't say if you have any risk factors for oral cancer--tobacco use of any sort for instance. That, combined with the white patch, would be reason to watch it. The fact that not one but two oral surgeons were highly suspicious of cancer would keep me on the alert. You're lucky to have apparently be cleared, though.

Best,
Anne