Geri
all I can say is that none of the 4 PetScans/CT I have had in the last two years were "definitive" nor even helpful. In contrast, the MRI's identified the cancer clearly. So if the MRI did not show cancer, as it sounds, then all should be well. Don't worry if the Petscan does 'show" something as every one of mine was false. All they are good for in my opinion is to stage the radiation fields.
good luck on downsizing, We are planning a move this Spring also and sorting out stored "stuff" is turning out to be a Herculean task.