Jim Kelly underwent a biopsy on Thursday, and preliminary results showed no return of cancer, according to a post on his wife's Instagram account.

Kelly had the procedure in New York City after his latest scans following extensive treatment for cancer of the jaw were inconclusive.

The former quarterback, who led the Buffalo Bills to four consecutive Super Bowl appearances in the 1990s, said last week at his annual football camp that he felt good and was cleared to work out. He first announced he had cancer in his jaw in 2013.