dw,
Please go back and read my first response to you. Quit using tobacco and watch the leukoplakia fade within a very short time. Anywhere that doesn't fade should be scalpel biopsied because that tissue is the most likely to become precancerous or cancerous. Take this very seriously and never let a physician or dentist tell you that they can tell with their naked eye that what you have is "nothing". It happened to me and my "nothing" was squamous cell carcinoma, which by the way, hurt.
Good luck quitting,
Barb