Television hostess Giuliana Rancic underwent a successful double mastectomy followed by reconstructive surgery on Tuesday, E! News announced.

"G is doing really well," her husband, Bill Rancic, told the network.  "Her surgery lasted about four hours and the doctors were very pleased with the result."

Giuliana Rancic, 37, announced her decision to undergo the surgery earlier this month on "The Today Show."  She found out she had breast cancer in October after she had a mammogram prior to starting fertility treatment.  Later that week, she had a double lumpectomy.

But the couple found out that the cancer didn't completely clear out of one breast, prompting her decision to have a double mastectomy.

Dr. Marisa Weiss, president and founder of Breastcancer.org, told ABCNews.com after Rancic's announcement that a mastectomy may be medically necessary in cases where doctors can't remove the entire lump.

"For someone with early-stage breast cancer, having a lumpectomy with radiation is equally as effective as a mastectomy, but only if doctors can get clear around the lump."

Many women, Weiss said, choose to have the other breast removed in order to prevent cancer on that side, or if they already had cancer that was removed, to prevent it from coming back.

"With the double mastectomy, I have less than a 1 percent chance of getting it back. With another lumpectomy, radiation and medication, I could have seen 20 to 30 to 40 percent chance in my lifetime, and for me it just wasn't worth it," Giuliana Rancic said.

The Rancics have been very open about their struggle with fertility, and Giuliana Rancic said she hopes that after the surgery she can move forward with her plans to have a baby.

Her husband said his wife is doing well and is in good spirits.

"She had a little bit of pain through the night but is feeling much better this morning and was cracking jokes," he told E! News.

And Giuliana had a message of her own to share.

"I want to thank all the viewers and fans for their support and prayers," she said. "The tweets and notes have not gone unnoticed. I am very grateful."

Read more: http://www.eonline.com/news/giuliana_rancic_undergoes_successful/280663#ixzz1gXxCx9vz