From an outsiders view, there is way too much correlation to not be able to identify causation in this situation.

The brightest minds of our generation(s) should be trying to determine why such rare forms of cancer were focused on such a small area. Even if you can't change the past, you may be able to change the future. This is NOT something for the back burner.

Maybe if there was an incentive, somebody would put in the effort to figuring out.