Big Brother legend Charlie Doherty has revealed that she has been diagnosed with a rare brain tumour following a recent MRI scan. Doherty – who was a big character within her Big Brother season – took to her Instagram account to announce the news and urge others of the warning signs. Alongside a selfie of herself, she wrote: “So I received some rubbish news this week… I have been having some ongoing issues which has gone on a while and I pushed for an MRI which has resulted in them finding a brain tumour. “I have been researching and finding out as much as I can and I basically wanted to share…