I have a pimple size bump between lip and right nostril. My elderly dermatologist said it is sebaceous and another younger dermatologist cosmetic surgeon last week said it was suspicious. It is white and over time has had some peeling dry skin around it. Once or twice I accidentally scratched it or pulled the dry skin and it bled. Now it seems to be getting smaller. If if goes away on its own can I trust it is not cancerous in nature? I have had this for 6 to 12 months, I think.