Jane, sorry to be so late in replying. First of all, the ONCO-DX was very new, very expensive, with results undocumented when I was diagnosed. As for Arimidex treatments, I have had no PET scans, and unfortunately, I believe neither of my docs realize I have had no bone scans. I plan to address that in April. For testing on Arimidex, they draw blood each vist to check for possible damage, I believe to the liver or something like that. My sister's ONC also draws a CA127 cancer test, but mine never has.
As for radiation discoloring, it's just like a sunburn. Within three weeks, everything had peeled away, but I am left with a permanent patch of skin that is perhaps a shade or two darker than the rest of me. Otherwise, I always have a yearly mammogram, yearly checkup EKG's but only because of my age. I believe that is acceptable since I had right side cancer, not left. As for stopping Arimidex, NEVER. I would have had to be very sick to do that. Many years ago, in 1993, a dear friend stopped taking Tamoxifin after only two years because of the "side effects". One can never know if that made a difference, but her cancer returned and she passed in 1998. That made me determined not to stop, regardless.
Seems like you are well on your way to tackling all this work. I am sorry that you must drive all those miles for treatment. For me treatment was every day, but I only saw the doctor once a week.
Hoping that all is well with you.
Judy