Hi Bethy, I guess this is a scary time for you. I have had very extensive bone mets for 11 years now but never on any type of scan had it described as of mottled appearance. You do not say what type of scan you have had. Was it a radionuclide bone scan, MRI, or a CT scan? If it was a radionuclide bone scan the area being looked at can have that appearance of mottled gray to black spots. The disadvantage of this scan is that cancer, arthritis, infection and other bone diseases all look very similar. It is then that further types of scans would be requested. The other types of scan can be more precise but still difficult sometimes to read. I have had scans when second opinions have been asked for by my oncologist as well. So try not to get too despondent, I know it is difficult. Maybe if you don't hear anything soon have a word with your BCN and ask if your scans have been looked at again yet :). If she is sympathetic she will understand how worried you are and do her best to let you know quickly when they have any further news.
Dawn
xx
edit: sorry bethy I just realised you said what sort of scan in your title.