According to Reuters, Osbourne told People that one of the two lymph nodes removed during her colon cancer surgery on July 3 tested positive for cancerous cells--an indication that cancer had spread beyond her colon.
"It was not the best news," she told the magazine. "You think nothing will ever happen to you. You're invincible. Then after you get over the shock and panic you realize how lucky you are to be alive."
Osbourne will start chemotherapy on July 29 and plans to have MTV film the treatment when shooting resumes for the second season of The Osbournes.
"People will see me having chemo. It'll be interesting, " she said. "We need to get a different vibe going. I think I'll bring some music, introduce myself, maybe we can sing some songs and cheer the place up."
The Osbournes shows the daily lives of Ozzy Osbourne, the self-proclaimed "bleeping Prince of Darkness," wife Sharon, and two of their children, Jack and Kelly. The show is the biggest hit series in MTV's 21-year history and the most-watched series on basic cable.