Former professional wrestler Bret "The Hitman" Hart revealed Monday that he's fighting prostate cancer. 
 
 "I've had a great lifelong dance and I'm a survivor of many hard battles," the 58-year-old Hart said in an Instagram post. "I now face my toughest battle. With hesitation and fear, I openly declare myself in my fight against prostate cancer." 
 
 The WWE Hall of Famer, who suffered a stroke in 2002, said he'll undergo surgery in the next few days. 
 
 "I make a solemn vow to all of those that once believed in me, the dead and the living, that I will wage my fearsome fight against cancer with one shield and one sword carrying my determination and my fury for life, emboldened by all the love that's kept me going this long already," Hart wrote. 
 
 Bret Hart won world heavyweight titles with both the WWF/WWE and WCW during his pro wrestling career. Courtesy WWE 
 
 Hart won the world heavyweight championship on five occasions in the WWF and twice with WCW. In addition, he won the WWE U.S. heavyweight title five times. 
 
 Hart, who retired after suffering a concussion in 1999, is a member of the famed wrestling Hart family from Canada. His father, Stu Hart, wrestled professionally before gaining acclaim as a trainer. Brother Owen Hart wrestled professionally until he died in 1999 after falling from an apparatus as he was being lowered into the ring from the ceiling of Kemper Arena in Kansas City, Missouri. ||||| Aunt Viv from "The Fresh Prince of Bel-Air" says she's been dealing with medical issues since 2004. She allegedly received treatment for vertigo and intense facial pain, describing such symptoms as "a strange ‘chatter’ in her jaw; was unable to comb her hair; could not touch her face; had severe reactions to sound; would awaken with her mouth clenched; could not move her body in a manner she was used to; and found light painful." 
 
 "The Little Couple" star revealed in Dec. 2013 that she had been diagnosed with a rare form of cancer, stage 3 choriocarcinoma, that started with a non-viable pregnancy. The pediatrician and reality star explained that she is "undergoing treatment, including surgery and chemotherapy," and later that month shared a photo from the hospital. 
 
 In Nov. 2013, the "Real Housewives of Atlanta" star revealed she "was diagnosed with blood clots in my lung," medically referred to as Pulmonary Embolism. "[W]ith the Grace of God, the help of the doctors, nurses and the love of my family and friends, I was healed ... Thank you all for supporting me in 2013! I know that none of this is possible without you. I am grateful, I love you and I wish each of you a safe and HAPPY, PROSPEROUS NEW YEAR! Welcome 2014!" she wrote on her site at the end of the year. 
 
 In Jan. 2013, Walter was hospitalized in D.C. after falling on a step at the home of the British Ambassador to the United States before President Obama's second inauguration. It was in the hospital that she was diagnosed with chickenpox, from which she never suffered as a child. After six weeks off the air, Walters returned to TV in early March. 
 
 In Oct. 2013, ABC News' Amy Robach had her first ever mammogram, on air for "Good Morning America." She was diagnosed with breast cancer. In Nov., Robach underwent a double mastectomy when her doctors discovered that the cancer had spread to her sentinel lymph node. She started four months of chemotherapy in mid-December. 
 
 In Nov. 2013, Jackman shared an alarming diagnosis on Instagram. The "Wolverine" actor posted a photo of himself with a bandage on his nose and wrote: "Deb [Deborra-Lee Furness, his wife] said to get the mark on my nose checked. Boy, was she right! I had a basil cell [sic] carcinoma. Please don't be foolish like me. Get yourself checked. And USE sunscreen!!!" 
 
 In Oct. 2013, the young pop star was rushed to the hospital and had to cancel his tour. He posted a photo of himself hooked up to an IV, captioned "I've never felt so bad :(". It was later reported that Mahone was "being treated for a blood clot and 'extreme inflammation' in his throat," as well as for "severe dehydration." 
 
 The Mary Tyler Moore actress was diagnosed with a rare, terminal brain cancer in January 2013. In March, People magazine reported that her doctors gave her as little as three months to live. But in August, Harper's doctor revealed that her condition was showing marked improvement. "I feel much better," she told People in September. "And my brain scans are looking better too." 
 
 In May 2013, Jolie opened up about her choice to have a preventative double mastectomy in an op-ed for The New York Times. The 37-year-old actress wrote candidly about carrying a "faulty" gene, BRCA1, and revealed she had an 87 percent risk of getting breast cancer and 50 percent risk of ovarian cancer. Her mother, Marcheline Bertrand, died in January 2007 at the age of 56 after an almost 10-year battle with ovarian cancer. 
 
 Tori nearly lost her life during her fourth pregnancy with son Finn Davey after she was diagnosed with placenta previa. She spent four months on bed rest at a Los Angeles hospital, all the while keeping her condition a secret from fans. 
 
 In July 2013, the "Tiny Dancer" singer had to cancel a few shows to get treated for an inflamed appendix and surrounding abscess. "I was a ticking time bomb. I guess I could have died at any time," said John of his undiagnosed appendicitis. "I feel so lucky and grateful to be alive." In May 2012, John was hospitalized after developing a serious respiratory infection following a Las Vegas show. 
 
 In July 2013, it was reported that the country music star has congestive heart failure because of a viral respiratory illness he contracted. Doctors described his condition as stable. 
 
 In July 2013, Carey was hospitalized for a dislocated shoulder obtained on set of her music video #Beautiful. 
 
 In April 201, Van Dyke revealed he has been suffering from an undiagnosed neurological disorder for the past seven years. In May, he announced he might've finally found the cause of his mystery illness: Dental implant surgery, which can cause nerve damage and may lead to problems related to pain, speech, eating and kissing. 
 
 In February 2013, Gaga canceled some tour dates because she had to undergo surgery for a hip injury. 
 
 In June 2013, the 68-year-old claimed his stage-four throat cancer was caused by performing oral sex. Reportedly, he said he contracted it through the human papillomavirus (HPV), a sexually transmitted disease. The actor later denied making that connection. 
 
 Douglas' prettier half checked into a mental health facility for treatment of her bipolar condition in April 2013. Two years prior, the 43-year-old Oscar winner checked into a similar facility for a brief stay for treatment of her condition, known as Bipolar II (a disorder characterized by mood swings and depressive episodes, commonly treated with medication and psychotherapy). 
 
 In June 2012, Roberts announced that she had been diagnosed with a rare blood disorder called MDS. She started treatment almost immediately and left "Good Morning America" in late August for a transplant. After undergoing a bone marrow transplant in September, Roberts returned to the morning show she co-hosts in February. 
 
 In February 2013, Fisher was hospitalized to undergo treatment for her bipolar disorder. 
 
 Carnie revealed that she has been diagnosed with Bell's palsy -- a condition that affects the nerve that controls the muscle on the side of the face, which weakens the muscle and leads to droopiness, according to the Mayo Clinic -- in a tweet to her 5,000 followers in March 2013. 
 
 In a candid interview with the the Daily Mail's Sunday magazine You in March 2013, the 40-year-old actress reveals that she experienced a miscarriage while pregnant with her third child. 
 
 The television personality suffered a seizure in March 2013 on the set of her E! show, "Fashion Police." The next day she tweeted that doctors were still "trying to figure out why" it happened. 
 
 Lil Wayne was hospitalized for seizures in March 2013. The rapper tweeted, "I'm good everybody. Thx for the prayers and love," hours after TMZ reported he was close to death. 
 
 The reality star was hospitalized with a pregnancy scare in March 2013, three months before giving birth to her daughter North. "Kim started feeling ill on the plane from Paris, and called friends as soon as she landed," a source told New York Post's Page Six. "She was rushed to her doctor in tears. She thought she was having a miscarriage." 
 
 The Motley Crue singer underwent emergency surgery in March 2013 after walking offstage mid-concert in Sydney, Australia, due to alleged kidney stones. He was rushed to the hospital, cutting short the show. 
 
 Brooke revealed she had thyroid cancer in 2012, telling HuffPost Celebrity after her recovery: "I think just hearing the word cancer and just thinking about my kids and knowing that I needed to be OK [was the worst part]. But then I went right into researching and gathering all the medical information. I really needed to be a great patient and be responsible and do what the doctor suggested and just take it very seriously. But I just think -- being so health conscious -- hearing that word [cancer], that’s the scary part of it. And then getting educated balances out that fear." 
 
 The actor-comedian was hospitalized in January 2012 for mild kidney failure and diagnosed with lupus nephritis, followed by another medical visit weeks later due to blood clots in his lungs. Nick was forced to give up his New York City radio gig to focus more on his health. 
 
 In her HBO documentary "Life Is But A Dream," Beyonce revealed she had a miscarriage before getting pregnant with her now two-year-old daughter, Blue Ivy. In May 2013, Bey canceled one of her shows due to "exhaustion and dehydration," igniting rumors than she is pregnant with baby No. 2. (The rumors were since debunked). 
 
 Hillary made headlines when she was hospitalized after Christmas 2012. The condition stemmed from an earlier injury, when she had fainted and struck her head during a trip to Europe. Doctors said her health scare did not result in a stroke or neurological damage, and she was treated with blood thinners. 
 
 Kate Middleton was hospitalized in London in late 2012 due to a rare pregnancy complication, which can cause severe dehydration and last throughout pregnancy. The hospitalization forced the royal family to announce the pregnancy before the end of Middleton's first trimester. 
 
 The "Malcolm in the Middle" star, 26, took to Twitter in early December 2012 to announce he'd suffered a stroke. "Have to start taking care of my body," Muniz tweeted. "Getting old!" One year later, Muniz suffered a second mini-stroke, tweeting to his fans that the experience was "Miserable." 
 
 While on assignment in Portugal in Dec. 2012, the TV personality was temporarily blinded for 36 hours, after sunlight reflecting off water sunburned his eyeballs. 
 
 Rosie discovered her coronary artery was 99 percent blocked in August 2012. She called her recovery from the condition, which is the leading killer of men and women in the U.S., a "miracle." 
 
 Jack was diagnosed with the autoimmune disease multiple sclerosis in June 2012. He first became concerned that he had a health problem when he noticed that he was rapidly losing his vision -- he lost 80 percent in his right eye. 
 
 The actress was diagnosed with breast cancer in Sept. 2012 and underwent a double mastectomy. 
 
 In August of 2012, the singer was silenced for a second time by this throat condition, which he had previously undergone surgery for in October of 2011. 
 
 The Food Network star revealed she had Type 2 diabetes in 2012 and takes Victoza, a once-daily noninsulin injection. 
 
 The British pop singer was hospitalized with a life-threatening bout of pneumonia in November of 2011 while touring in Austria. Then in May 2013, he was hospitalized for two weeks following a car crash. 
 
 The British singer was ordered by doctors to stop singing and even talking for a month in the summer of 2011 due to polyps on her vocal cords. She underwent surgery and was forced her to cancel 14 North American tour dates. 
 
 Around the same time as Adele, country music star Keith successfully underwent surgery for the removal of a vocal cord growth. The singer had announced in November that he would be postponing some performances because of the polyp. 
 
 In 2011, the singer landed in the hospital with an iron deficiency and was "very malnourished." She blamed it at the time on junk food. In 2013, however, Gomez announced that she was canceling the Asian and Australian leg of her tour to take some time for herself. It was then rumored that she was battling Lupus. 
 
 In early 2011, the tennis star was sidelined by blood clots and a hematoma (a gathering of blood under the skin) on her stomach, which required several hospital visits. 
 
 The "Dexter" star underwent treatment for cancer in 2010. "I feel fortunate to have been diagnosed with an imminently treatable and curable condition, and I thank my doctors and nurses for their expertise and care," Hall said in a statement. 
 
 In late 2012, the singer was hospitalized because of "minor health issues" related to Lupus. 
 
 In May 2012, Rihanna missed an SNL rehearsal due to "fatigue and illness," and was later hospitalized for exhaustion. 
 
 In an interview with Seventeen magazine, the "Modern Family" star revealed she had fought a lifelong battle with kidney dysplasia, a condition in which a baby's kidneys don't develop properly in the womb. In early April 2012, she received a kidney transplant from her father, actor Edward James Hyland.
– The ex-professional wrestler known to his fans as "The Hitman" has just taken a hit of his own. Bret Hart has prostate cancer, he told fans in an Instagram post Monday, and he says he'll be having surgery within days, ESPN reports. "Mark Helprin wrote: 'We are all perfect clocks that Divinity has set to ticking when, even before birth, the heart explodes into a lifelong dance.' I've had a great lifelong dance and I'm a survivor of many hard battles. I now face my toughest battle," the 58-year-old Canadian wrote. Hart, who suffered a stroke in 2002 and says he hopes to raise cancer awareness, notes in the Instagram post, "I openly declare myself in my fight against prostate cancer. In the next few days, I will undergo surgery with the hope of defeating this nemesis once and for all. … I will wage my fearsome fight against cancer with one shield and one sword carrying my determination and my fury for life, emboldened by all the love that's kept me going this long already." (The pro wrestling world lost both Dusty Rhodes and Roddy Piper last year.)