well, I for one had 2 bipsies; the first one didnt really leave a scar or anything, but it damaged a few saliva glands, resulting in a mucucelle (or whatever its called). So i had to cut it back up...
Second go, did leave a mark; a somewhat swollen bump (as if it wasnt swollen enough as it was >_> ) around the cut.
Just gotto bug a few more docs to have it fixed~.
biopsies do -not- normally leave a visible scar or mark.