I have been worrying that each of my diagnostic tests in April may have been false negatives.

1. The bone scan: the pelvic area looks bright in a NORMAL bone scan, so if I had a small area of osteoblastic cancer in the pelvis, how would it show up? The radiologist would probably miss it against that already bright background.

I have a bone condition--they don't know what it is, but from biopsies, etc., they know it isn't cancer. I have EXTREMELY dense bones and it makes CT scans look like "salt and pepper". And MRI's look darker than they should. There are a lot of reasons that the condition does not look like cancer--it is completely symmetrical in pelvis and spine for one thing. There's no fluid around the spine. Anyway, I'm worried that this bone condition, which covers everything, is hiding actual cancer in my pelvis.

2. I am afraid with the whole pelvis looking dark on my MRI, that a cancer lesion would be hidden. How would it show up on that dark background? They did contrast with it--and saw no enhancement, but the radiologist told me that the enhancement doesn't show in 100 percent of the people. Is there any way they could look at that pelvic mri, that looked all dark, and see cancer--or would it be hidden (this is assuming the enhancement wasn't working).

3. Same problem with CT Scan. The pelvis all looks like salt and pepper. The first scan I had in February showed no uptake. The second scan was in April during chemo--I don't know if they could rely on the enhancement because apparently people get "chemo bones" and it's very unreliable. I know that a bone tumor can show on the CT part of the scan, but, again, would it be hidden by the salt and pepper background. How do you think it would show up?