So what do you tell the surgeon? It would be obvious to them once they do a testosterone test that something is very off. I think it may also raise their suspicion once you tell them you have already had 2 mastectomies.
I am asking because responders on this thread take hormones very lightly. I bet any healthcare professional would lose their sh!t immediately when they hear about the actual regimen. I think its also risky to keep your medical info secret for any kind of surgery. Not to mention there is also so much you can keep in secret, as quite a few blood tests (testosterone and estrogen obviously but also prolactine and probably many others) would hint at something.
I have no idea how many of these stories are made up. HRT with mastectomy is still a very extreme route.