Bald spot, baby and horrible Doctor.

So my brother has a baby who is 11 months.  She was born with two small bald spots that are oval in shape.  They finally got a referral to a dermatologist, who basically said it could be a tumor or cancer 😱 of course they are terrified now, but after researching it more I think the doctor jumped to conclusions.  She is going for a biopsy this week.  Just wanted to see if anyone had similar experiences!