I have had two melanomas and might have my third (just got some preliminary results back).

I have more than a thousand moles and is lucky to be at Sloan Memorial. They found my second one by pointing some laser onto the mole without biopsy and could see the malanoma there. I have 3d images of me and all sorts of things.

This sounds more like something I would need (given my high number of moles) if I am lucky enough that this third one either isn't a melanoma or early stage.

One thing to note out which I learned. Asymmetry needs to be understood a little different. I have a lot of asymmetric moles that are just fine. They can even grow and it will be fine as long as their internal network nodes grows the same (think of it as a vector image that will grow uniformly.