>>510050120 (OP)I went to a dermatologist as a teen, the doctor seemed cool but crazy he was some foreign, last name Risteau? Anyway, he immediately spotted a precancerous thing of melanoma on my back and I had it removed that day, was weird, they numb your back and then used this cookie cutter shaped thing to remove a bit of skin the size of a silver dollar, and the blood was really dark. I commented on it and he said it was highly oxygenated I think. Anyway, I'm cancer free thank you derm man!