Each year in the United States, approximately 455 per 100,000 men get diagnosed with some form of cancer, and 39.6% of men and women will be diagnosed with cancer at some point during their lifetimes, according to the National Cancer Institute.

This means that we all know someone, including celebrities, who already has or will have the disease. In the last few months, a number of well-known figures, including Bounty Hunter star Beth Chapman, Val Kilmer, Camille Grammer, and Senator John McCain have announced that they have cancer.

While these famous people are comfortable enough to share their diagnosis and open up about their battle against the awful disease, not all celebrities have done the same. This week, it was revealed that another U.S. politician has been battling cancer, and no one knew.

According to the Associated Press, sources close to former presidential nominee Mitt Romney confirmed he was diagnosed and already underwent treatment.

So what's his prognosis?

The anonymous sources told the AP that Romney was diagnosed with "slow growing prostate cancer," last year.

The cancer was "found not to have spread beyond the prostate," and the former Massachusetts governor underwent surgery over the summer to have it removed.

Jake Tapper, the Chief Washington Correspondent for CNN, also shared the news on Twitter, citing another source, who shared a few extra details, including the politician's prognosis.

"Mitt Romney was treated over the summer for prostate cancer. He was treated surgically by Dr. Thomas Ahlering at UC Irvine Hospital in California. His prognosis is good; he was successfully treated."

The news of Romney's cancer comes in the heels of the rumors about the politician considering a run for Senate. He would be filling the Republican seat that retired Utah Senator Orrin Hatch once held. However, as of now, no official announcement on whether or not he will run for Senate has been made.

In the hours following the news of Romney's health scare, Meghan McCain, whose father John McCain was diagnosed with brain cancer, took to social media to show their support and send prayers to Romney.

"Happy to hear @MittRomney is doing well. Regardless prayers to him and his family. #F"”kCancer!" Meghan tweeted.

Neither Romney nor his reps have released a statement addressing the cancer news, but it's probably just a matter of time until they do.

We're glad he is successfully recovering from this setback.