That's probably at least one reason that there is more breast cancer in developed countries than developing: because women in the Third World are less likely to have access to the machines that detect early cancers.
So what does it mean? I don't know. If we ever get national health insurance, and the rates soar, we'll know it was the access problem. And then what? Maybe we'll look at pollution and the human effects of the -cides: herbi- and pesti-. That's why I call this picture of my head Chemo/Lawn.