Hello Fred. I am new to the forum, but came across your post. My husband had received chemo/radiation 8 years ago for stage IV base of tongue cancer. At his annual f/u the CT scan showed significant carotid plaque/narrowing. One side worse than the other (the side with the more direct radiation). He is 58y/o. Previous scans were normal. He is not at the point of the stent, but the progression from normal to significant narrowing in 1 year is concerning.