Hi Splunk,
I too had a diagnosis of leukoplakia, but mine was on right vocal chord, which was inadvertently found when having an endoscopy for reflux. Saw an ENT who also tld me he was 99.9% sure that it was not cancerous. Being that he cold not tell me 100% not cancerous, I insisted on a biopsy. Even though the procedure was painful and left me without a voice for 3 weeks, I'm glad I did it. The outcome was non-cancerous, but the ENT has been scoping me every 3 mos. to make sure there is no change. As soon as there is any evidence of an increase, I will have it biopsied again. Better to err on the caution side and be sure. This oral cancer is a terrible thing, I've witnessed this thru my Mom's oral cancer. Good luck, and insist on that biopsy, it will either rest your mind or give you a jump start on treatment, I'm praying for it to be non-cancerous.

Regards,
Margie