Mole regrowth

Hi

I had a raised mole surgically removed by my GP on my abdomen about 18 months ago for cosmetic reasons. 
I have just noticed it itching slightly and when I've looked it seems to have started to grow back in the same spot. This must have happened very recently and quickly as I'm sure I'm sure I'd have noticed it before.

I will try contact my doctor, but anyone had any experience of this?

 
Thanks