Hi flopper,
I haven't seen my CT scans but I have seen my MRI's before and after surgery and I can see the area where they removed scar tissue on the RTL along with more scars that were never there before until I had a veeg where they did surgery and planted 4 electrodes on the RTL and 3 on the LTL. It may be possible that what you are seeing is scars from where surgery was done. Here's wishing you well and May God Bless You!

Sue