The first two dates of the American leg of Ozzfest 2002 have been postponed.
The shows were called off after Ozzy Osbourne's wife Sharon underwent surgery for treatable cancer.
They were due to be held in Bristol, Virginia, and Pittsburgh.
Sharon Osbourne has become a star in her own right after appearing in the MTV reality show The Osbournes.
Family spokeswoman Lisa Vega wouldn't say what type of cancer Sharon has or where the surgery took place.
But she said it was completed by early Wednesday evening. No other details were available.
Vega said the entire family - including their 18-year-old daughter Aimee, who doesn't appear on the show - were at the hospital with her.
"Everyone is in good spirits because the prognosis is very positive," she said.
"The doctors have told them all she's expected to make a full recovery. Obviously, they're concerned for their mother and are by her side, but they're all looking forward to a positive outcome."
An MTV spokesman said: "We know Sharon will conquer this with the same tenacity and vibrancy she approaches everything else in her life. Our thoughts are with Sharon and the entire Osbourne family and we send her our love and support for a complete recovery."
(c) Copyright Ananova Ltd 2002, all rights reserved.
she'll b fiiiine