Hope all is well. Could be many factors as mentioned, and type of scan is a factor..PET/CT, MRT, CT, Sonagram..for acivity, maybe the uptake (hot spot) in a PET, which are highly sensitive, have high rate of false positives after treatmrnt, scar tissue, injury, etc, even talking during or before the PET can show activity. I wonder why another scan was done after a scan was done 3 months ago with an all clear? All the best, and hope for good news.
