Kelly, who led the Buffalo Bills to four Super Bowls during his 11-year NFL career, underwent surgery last fall after he had surgery for oral cancer.
In an Instagram post, Kelly’s wife, Jill Kelly, said "We finally got back the results from Jim’s recent MRI ... CLEAN! Thank GOD! It took a bit longer than usual because of all the reconstruction Jim has had inside his mouth. They wanted to be certain that all was good ..."
Kelly threw for 35,467 yards and 237 touchdowns during his NFL career from 1986 to 1996. He was inducted into the Pro Football Hall of Fame in 2002.