Several techniques are possible. The one most satisfaying to me is the use of a skin graft withdrawn from the genital region for areola reconstruction, associated when possible to the opposite nipple graft after bipartition ( if there is enough volume). This technique has great results and leaves no sequels in the genital area. It causes no pain nor alteration of the sensivity to the nipple withdrawn. The areola coloration after a few weeks is the same as the opposite areola.
If the coloration starts to fade with years, an additional tattoo can be done. That way, the result will look a lot more natural than a sole reconstruction with tattoo.
If the opposite nipple is too small, nipple reconstruction can be carried out with a local skin flap that will necessarily be quite small for reconstructions with prosthesis, given the limited thickness available.
Others breast reconstruction techniques