Should I be concerned with a mole regrowing to previous size after punch biopsy?

I have a mole on my areola, which I've had my entire life. A few months ago, I got it checked for melanoma since it began to change. The dermatologist did a punch biopsy on the flat mole, and it came back as benign. I noticed that it quickly returned to the original size after only a few months. Should I be concerned about the regrowth? My dermatologist immediately scheduled an appt. for me to see a plastic surgeon for removal of the mole and check for melanoma once again. How will this heal?