Dave:
I'm living proof that there's something to the "gut" feeling. I had to argue with my GP and two ENTs to have my tonsils removed because needle biopsy came back NEGATIVE. Something just didn't "feel" right - all started with me accidentally finding a tiny, soft swollen place under chin that bugged me. All said adult tonsillectomies were bad and "Let's just wait and watch the swollen gland (they said from sinus infection). I begged, pleaded, then insisted on having tonsils removed. Yep, squamous-cell cancer underneath and wasted 3 months to where it spread to other side nodes. It will hurt no one to have a biopsy done on your lip - hopefully there is nothing there, but you will KNOW and not have to worry. Good Luck.

julieann