I’m glad your cancer was resolved. That’s scary stuff. My BIL wasn’t so lucky - I think he let it go on too long before getting treatment. He lost the inside of his right cheek and ended up having flap reconstruction surgery. Lost some lymph nodes too. They said they couldn’t get all of the cancer, so they tried radiation but he couldn’t tolerate it. He’s never recovered from the surgery - can only open his mouth about 1/2”. Has been on a feeding tube for the last year (although he can still eat some things), and recently had a pain pump installed. To top it off, he just had his prostate removed.
Sorry to hear about your BIL.
Early detection is key. I felt something in my mouth, pushed on it with my finger. It hurt. Off I went to get it checked out.