Fields missed the entire 2003 season in his first bout with the disease.
The positive news is that Fields and his doctors caught it in the early stages, said Fields' agent Jim Steiner on Thursday.
Fields returned to the field in 2004 and was selected for the NFC Pro Bowl team, the second of his career. Fields also won the Ed Block Courage Award for courage and sportsmanship.
Fields had planned to re-sign with the Panthers earlier in the off-season, but thought it would be best to wait after his tests gave him a clean bill of health in early May.
Had he not, he may never had caught the cancer in time. Keep Pounding Mark!
Bad News: Fields has recurrence of Cancer
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