David, I sense that you really dig into a problem until you find an answer, which may be why you are a CPA and is why I think you are very good at it. Most of us don't have that urge as strongly and the windshield makes more sense than the rear view mirror.

No guarantees that lifestyle, or lack of it, will keep us around longer -- Ask Jim Fixx...

As to tracking, that's why they gather data in one place for analysis; I believe it's highly unlikely that independent testing results are going to go there.

OTOH, if it made even a slight difference in the course of treatment, then the money spent would be justified.

Of course, it might help the Doc's place potentially more accurate survival stats on a particular patient, but I know how bad those stats are in the first place, having had cancer come back to an area that was specifically irradiated. It also might help the victim to know where the cancer came from, as it certainly does in your case, but it might not.

My CCC doctor immediately dismissed HPV as proven as a cause and he had just returned from a medical cancer conference where it was discussed.