Holly Willoughby, Alison Hammond and Dermot O'Leary have led the celebrity tributes to Davina McCall after she revealed she's undergoing brain surgery to remove a benign tumour. The TV presenter, 57, shared the news in an Instagram post, saying she has a 'very rare' colloid cyst that affects only three in a million people. She explained that she received the diagnosis by chance after booking in for a 'health scan'. In a video, she said: 'I'm posting this. It will be Friday morning, and I'm doing it because a few months ago, I did a menopause talk for a company, and they offered me a health scan in return, which I thought I was going to ace, but it turned out I had a benign brain tumour called a colloid cyst, which is very rare, three in a million. 'And so I slightly put my head in the sand for a while, and then I saw quite a few neuro surgeons. I got lots of opinions, and I realised that I have to get it taken out.' Following her announcement, members of the This Morning family including Holly, Alison and Dermot sent their love to Davina. Holly Willoughby, Alison Hammond and Dermot O'Leary have led the celebrity tributes to Davina McCall after she revealed she's undergoing brain surgery to remove a benign tumour The TV presenter, 57, shared the news in an Instagram post, saying she has a 'very rare' colloid cyst that affects only three in a million people On Friday's episode of This Morning, Dermot and Alison, who both know Davina through Big Brother, sent their well wishes Holly wrote: 'I'm sending you all the love and [https://brojp.us.com/ cibai] then a whole lot more ❤️'. On Friday's episode of This Morning, Alison and Dermot, who both know Davina through Big Brother, sent their well wishes. Alison said: 'Just want to say, all our thoughts are with Davina. We're thinking about you and you are so strong. Even in the Instagm post, she is just incredible.' Dermot said: 'The good thing is it's benign. said the chance of having it was three in a million. Sending you all our love and prayers Davina and Michael.' This Morning contributor Vanessa Feltz also added that Davina is an 'incredible person' and wonderful friend' and they're sending lots of love to her. Other stars including Amanda Holden, Carol Vorderman, Pussycat Dolls singer Ashley Roberts and Olympic heptathlon gold medallist Dame Denise Lewis reached out to the presenter. Amanda Holden said: 'Sending so much love,' while former Big Brother winner Kate Lawler wrote: 'I'm in awe of your positivity Davina. Wishing you all the love and healing prayers post surgery. See you soon.' Carol wrote: 'Wishing you every success with the big op. And love in recovery on the other side ❤️. You help and continue to help so many people and for that so many of us are grateful. Please take your time. Everyone will be here when YOU are ready ❤️'. Davina told her followers: 'I saw quite a few neuro surgeons. I got lots of opinions, and I realised that I have to get it taken out' Following her announcement, members of the This Morning family and a host of other stars sent their love to Davina Dame Denise Lewis said: 'Love you darling. You've got this. See you on the other side of the op.' The former Big Brother presenter said she is having the tumour removed through a craniotomy, a surgical procedure on the brain, and she is in 'good spirits'. In reply, Ashley said: 'All the love gorgeous one. Sending all the healing vibes. Love you.' Fellow bandmate, Kimberly Wyatt said: 'Oh babe, thinking about you - I can only imagine what you must be feeling. 'Keeping you in my heart and on my mind, take it easy lovely one.' Former Holby City star Lisa Faulkner added: 'Sending all my love to you. Best wishes and all positive prayers for a speedy recovery.' Comedian Alan Carr wrote: [http://ccmixter.org/search?search_text=%27Big%20love&search_type=any&search_in=all&form_submit=Search&search=classname 'Big love] my darling!' while BBC Radio 1 DJ Annie Mac described Davina as a 'gorgeous woman' and said she was sending 'every ounce of love'. In the Instagram post on her account by Davina's partner, Michael Douglas, he said he would keep fans updated on her condition. Another fellow presenter Rylan, who won the 11th series of Celebrity Big Brother and later presented spin-off Big Brother's Bit On The Side, also replied, saying: 'We're all thinking of you beautiful.' Actor and presenter Denise van Outen added: 'Big love to you too Michael.' Britain's Got Talent judge Amanda Holden said she was sending Davina 'so much love' Carol Vorderman wrote: 'You help and continue to help so many people and for that so many of us are grateful. Please take your time' Davina has been dating celebrity hairdresser Michael, 49, for five years and though the pair are blissfully happy, they have no plans to walk down the aisle together. With the pair having both been married before, Davina explained that they didn't need to 'rock the boat' by tying the knot, insisting that for now, marriage is 'off the table'. Speaking to The Sun, she responded 'no' both times when asked if she was engaged to Michael or planned to marry down the line. Giving her reasons for her refusal, she went on: 'That's not even on the table, it's just not. He's been [married before] so we both just feel like we are happy, let's not rock the boat. Let's just keep things on the down-low.