perhaps asking for a repeat scan or a ct to confirm concerns may be a good idea prior to doing another surgery when so many false positives are common place? I asked my surgeon to do a second CT scan prior to doing the surgery because it had been a few months and I wanted to know that all was confirmed and all was known prior to them going in ... he was glad he did the second one, as the site had changed size etc by that time, so they knew more when they were in the surgery room... i would definitely want a second test to confirm prior to surgery based on a PET scan being done so close to the end of treatment ... doesn't take much to light those up.