My husband chewed tobacco for 20 years. In January he had a cankersore that would not heal. Turned out to be scc at stage 1. Since then he has had surgery. During the surgery the Dr. did a skin graft inside his mouth, removed 6 teeth, part of his mandible, 50 lymph nodes in his neck ( 2 came back to be positive). Fortunately the pathology of the bone was negative. He has been going through 30 treatments of radiation. Compared to a lot of patients on this forum he is a lucky one. If you can consider anyone with cancer lucky. The drs. have never come out and said the tobacco was the culprit but I know it was. If you end up not having to go down this road (and I hope you don't) STOP THE TOBACCO NOW! The physical and emotional anguish that the cancer patient and their loved ones go through is not worth the so call pleasure the chew gives you. Good Luck to you and I do hope your situation has only been given to you as wake up call.