Thanks Maria! I think if I'd never been to this site it wouldn't have occured to me that it might be some type of oral cancer. But all this research is backfiring on me now! I think I've been so inundated with all this information that that was the first thing I thought! Peter says that after a day on antibiotics, he's feeling better and the lump seems to be getting a teeny bit smaller. That was encouraging because if it wasn't an infection, I don't think he'd notice any change!