My concern with this is that they’ll discover that everybody has cancer. We probably all do, but our immune system keeps it in check for most of us. What if the end result is millions start getting painful treatments for cancers with nasty side effects, and most of those cancers were never going to be harmful in the first place?
That's like those PSA blood tests for prostate cancer. It was so accurate that it could detect minute traces. The medical profession had to come out and warn against over-reaction if PSA detected it, as most prostate enlargements were benign. They suggest that if detected, monitor it closely but don't go off the rails and go the surgery route, which among other downsides, would prevent erection or cause incontinence.