Pro Football Hall of Famer Jim Kelly appears to be cancer-free after scan tests showed zero signs of oral cancer, his wife Jill announced on Instagram.

Four months ago, Kelly needed a 12-hour procedure to stop the cancer and reconstruct his jaw, per Mike Rodak of ESPN.com. Kelly had been free of cancer for three years, but he reported in March that doctors found evidence that it had returned.

But all seems fine now with the 58-year-old Kelly, who tragically lost his eight-year-old son Hunter in 2005 from Krabbe disease. Kelly never stopped fighting this cancer, and he won the ESPY Jimmy V Award last week for his perseverance.

Kelly played professionally for the Buffalo Bills from 1986-96, and turned the long-struggling franchise into one of America's best in the '90s. The Bills reached four straight Super Bowls from 1990-93, but lost every single one of them. Still, Kelly gave the Bills their greatest stretch run in history, and the franchise hasn't been the same since his retirement.

The five-time Pro Bowler became infamous for leading the Bills no-huddle offense, which was an unstoppable juggernaut throughout the '90s. Kelly retired after the 1996 season and was inducted into the Pro Football Hall of Fame in 2002.

After his football career, Kelly created the Hunter's Hope organization following his late son's cancer diagnosis in 1997. The University of Buffalo would later open up the Hunter James Kelly Research Institute. Kelly later dedicated his Pro Football Hall of Fame speech to Hunter.

Kelly now works multiple business expenditures, including a business that creates team logos, and he also runs his own youth football camp. Now, Kelly continues to work as an advocate, extensively working to help raise awareness for cancer.

Kelly spent a decade in the NFL against some of the toughest players of all-time, but the biggest and toughest battle of his life appears to have been conquered.

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