There's still a good chance that it will turn out to be nothing, but there is a small chance that it will be something. And if the something is bad enough, a mastectomy might be in order, which raises an interesting questions: to reconstruct, or not to reconstruct?
I'm queer in a genderfluid sort of way, and lately have been trending towards the androgenous-to-masculine side of the spectrum. I've had a few issues with dysphoria, but my boobs have never been the cause. They're not large enough to really get in the way, and I can generally ignore them - I've never felt compelled to bind. And to be honest, I'm pretty fond of them looks-wise (though I've never like them to be played with much). Images of trans and queer folks across the spectrum can resonate with me, but images like this resonate the most. I think that comes closest to my self-image, although the physical reality is of course quite different, as I have innie parts and not outie. So I'm pretty concerned that the uni-boob look would actually cause a fair amount of dysphoria for me.
And then there's this. Right now, I have a body that basically conforms to how society thinks bodies should look, except, perhaps, for the extensive tattoos and the queerness (which I can play up or down depending on my preference and/or circumstances). The point in both those cases is that not conforming is a decision that is my choice. A major physical change like this would take that choice out of my hands. And that non-chosen non-conformity also potentially complicates the whole finding a partner thing - which is difficult enough with all the "right" parts in place.
So that's where I am - not really any closer to a decision, just working out the various issues in my head. And hoping I won't actually have to make the decision after all.