ok I see no one has told you about the keratinizing. I kind of remember learning about it in anatomy class. Squamous cells are in many different places in the body. There is some that is keratinized and some that is non keratinized. It's nothing to worry about.
found on a website - keratin is part of a family of fibrous protein and is usually found in the outer layer of skin, hair and nails. So nothing to worry about.
Glad you don't have to go through radiation or more invasive surgery!! Hoping it stays that way.
I was one of the lucky ones that they don't know why I got mine either. They say hereditary, but who really knows.
Hoping you don't have to deal with this anymore, other then clear scans and no further treatment!!