Chemo For Sharon Osbourne

Sharon Osbourne says her cancer has spread beyond her colon.

In an interview with People Magazine, the matriarch of the reality show "The Osbournes" says she will begin a three-month course of chemotherapy at the end of July.

Osbourne, 49, says her prognosis is "very, very good" but her husband, rock star Ozzy Osbourne, became "hysterical" when he first heard the news.

Sharon Osbourne, who is credited with reviving her husband's career after he was fired from heavy metal band Black Sabbath in 1979, underwent colon cancer surgery on July 3. At the time, her publicist said she was expected to make a full recovery.

Since then, she's also been reported to be considering doing a daytime talk show.

In the magazine interview, however, Osbourne says one of the two lymph nodes removed during the procedure has since tested positive for cancerous cells, indicating that the cancer has spread beyond her colon.

"It was not the best news," she told People. "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."

"That's where I am right now. I simply have to take care of this thing," said Osbourne.

Osbourne said she will start three months of chemotherapy on July 29. She plans to allow the treatment to be filmed when shooting resumes for the second season of "The Osbournes."

The program has been a ratings-winner for MTV, which like CBSNews.com, is part of Viacom.

"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."

Osbourne said Ozzy, her husband of 20 years, "was hysterical, just terrified," when she told him the news, adding, "The doctor had to come over and sedate him."

Ozzy told People the couple planned to renew their marriage vows on Sharon's 50th birthday on October 9. "I've always had a plan that I'd get sick before she did, that I'd die before she did. But my plan didn't work out.... Life has a way of kicking you in the nuts," he said.

Their 16-year-old son Jack was also in the news on Thursday. He hurt his arm after a fall while climbing an empty building on Malibu's derelict pier to prepare to dive into the ocean. A lifeguard who treated him at the scene said Jack suffered only minor injuries.