Initially , the prognosis was positive , but by 1998 the cancer had spread to his bone marrow .
In 1994 , Rescorla was diagnosed with prostate cancer and underwent surgery to remove his prostate .
Initially , the prognosis was positive , but by 1998 the cancer had spread to Rescorla 's bone marrow .
In 1994 , Rescorla was diagnosed with prostate cancer and underwent surgery to remove his prostate .