I have a friend who has a lump on the right mid-back roof of his mouth... its about a centimeter in diameter and occasionally it gets bigger. and it sometimes hurts and is causing him discomfort. he cannot afford to see a doctor right now, and this has been going on for about 7-8 years. He is 22 yrs old and he does smoke but the lump was there before he ever started. Any ideas on what this might be would be greatly appreciated! Thanks!