Just because it involves your genitals does not mean it is sexual. The examination, your breast squeezed between the glass plates like a hunk of meat. Your labia spread and held open with a metal device. Your sexual history pored over in minute detail. The cold and clinical non-sexual going over is not conducive to sexiness.
And yet there is the examination of your breast, the piece of meat squeezed relentlessly between glass plates while that person, that significant other watches, detatched but vigilant. Your labia spread and held open, an examination, the cold chill of metal in that hot part of you, the spreading of the metal fingers and that other, looking, poking, exploring inside. Your sexual history held open to be devoured by hungry eyes, one hand on their clit or cock, one finger turning the page, licking turning.
So sexy? It is all in the way you look at it, I suppose.