I DEFINITELY WOULD NOT WANT TO KNOW.
I have several reasons for thinking like that, I've never had or never will have a mammograhy or colonoscopy to whatever cancer test there is out there. It's a to each his own situation
I myself have seen many, many folks, inlcuding my dad get diagnosd with the Big C, have the positive attitude to beat it , some did chemo, my father didn't and of all the people I'm referring to they ALL died.
That's why my mantra is "life is crap shoot".