Hello,
although I agree with the tobacco part, that it is foolish and so on, you know the song, please remember that people who never smoked or chewed have got cancer. Not all cancers are cause by cigarettes. Actually, most people have the cancer gene. Some develop and some don't. Like you have been suggested, get a second opinion without mention of the first and let us know. It's not because you chew tobacco that you will or won't get cancer. If it is that close to the ear, it could be even an infection in the gland also. Good luck.......
Larry D.