The former Bills QB told reporters Monday morning that he will not require chemotherapy or radiation treatments following his recent surgery to remove cancer cells in his jaw.
"There are not enough words to describe the feeling in my heart and in my family's heart how much it means to me that people took the time to write me hundreds and hundreds of letters," Kelly said.
Speaking at his annual football camp, Kelly said he will still have to have a CAT scan every two months.
The ex-quarterback has lost 14 pounds since his surgery, which included skin grafting to rebuild an area of his jaw. He said he's feeling sore and is not allowed to eat solid food, but is recovering as expected.
Kelly asked doctors if he could time out his surgery in order to still participate in his golf tournament and football camp.
"I never thought I'd be saying the word 'cancer,'" he said. "When I speak around the country, my theme is always perseverance. I was down and now I'm on my way back up."
The process has taken an emotional and physical toll on Kelly, who talked about the effects of his recent battle on his family.
"They've had to see daddy through back surgery, neck surgery, hernia surgery and even before I knew I had cancer I had two jaw surgeries," Kelly said. "It's tough because my kids are used to hearing that daddy will be fine, but then something else seems to pop up."
Kelly said that during his camp this year, he's using some of the lessons he's learned in the process to pass along to the kids in attendance.The Hall of Fame quarterback said doctors did not pin point a cause of the cancer.