I'm going to agree with tony. Unless these areas are clustered together I wouldn't be too concerned about cancer... Though anything goes... Often with cancer there is a primary, then if it spreads its usually to nodes, or just gets larger. It could be lichen planus, - I might ask for a referral to an ENT through your family dr. As well. This will get the ball Rolling in case it turns out to be something insidious - whoever you see first can probably give you some answers. If not you can go for the follow up with the second dr. Best of luck