Hall of Fame quarterback and Buffalo Bills mainstay, Jim Kelly, has been diagnosed with cancer.

Kelly made the announcement earlier today, saying that he has squamous cell carcinoma in his upper jaw bone, though he noted that "the prognosis for my recovery is very good."

Surgery to remove the cancer has been scheduled for Friday.

In a statement released on the team's website, Kelly writes, "With the excellent medical care that I will be receiving and the loving care of my wife Jill and my daughters Erin and Camryn and the support of my entire family and friends, I am extremely confident in my road to recovery. I plan to tackle this challenge head on, as we Kelly's always do, with toughness, perseverance and faith."

Kelly spent eleven years with the Bills, leading the high-powered offense to four straight Super Bowls from 1991 until 1994, though the team never brought home any rings.

The 53 year-old former quarterback also still holds many of the team's franchise records and was inducted into the Football Hall of Fame in 2002, during his first year of eligibility. As quarterback, he also lead the Bills to a 101-59 record, with 237 touchdowns and 175 interceptions.

His #12 jersey is also the only one to be retired in Bills history.

You can relive some of the magic that was the early 90's Buffalo Bills by watching  the video below.