Any one had medical tattooing for their scars?

Hi there,
I was just wondering if anyone on here has had medical tattoos to cover their mastectomy scars? I have very good flat scars which do not stick up at all so feel I would be a good candidate for medical tattooing. I know loads of you have had pigment tattoos to colour your reconstructed nipples but havent ever read a post from someone who has used the same method to cover up their scars. Anyone?
Clarabelle.