Mark Wright has told fans he suffered a worrying cancer scare.
The former TOWIE star also revealed he has had a huge 12cm tumour removed from his armpit.
Mark, 34, took to Instagram on Wednesday evening to shared the news with his followers.
He said it was a "tough call" to decide whether or not to speak about what he had been going through.
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Mark, who is married to Stockport actress Michelle Keegan, shared his message alongside a series of photos.
One was a mirror selfie of himself, with his left arm lifted to show the huge lump in his armpit.
Another showed him in the hospital before showing a shocking image of the tumour which has been removed next to a tape measure to show its size.
"One part of me wants to keep something like this private and the other part is thinking, if I can help/potentially save 1 person, well…. this is the right thing to do," he said in his post.
"So here goes. I discovered a lump in my breast/armpit area. Not very big, but enough to cause concern and to be cautious enough to get it checked.
"I saw a doctor who passed it on as 'a fatty lump that doesn’t need any treatment' so I just left it.
After some time the lump grew and began to bother me. I am someone that when it comes to life in general, I leave no stone unturned. When it involves health, this idiom quadruples.
"I saw another specialist who happens to be a breast consultant for a second opinion. He was certain after seeing an ultrasound scan that it was a LIPOMA (a BENIGN soft tissue tumour).
"However with it being rather large, he had a tiny bit of concern that it has/could turn in to a SARCOMA (a cancerous malignant tumour) however he was not 100% either way so to be more sure I had an MRI.
"From the result of the MRI, still this consultant did not want to rule out the worst because of the speed and the size of the growth.
"At this stage I moved on to a SARCOMA specialist. This specialist saw the scans around 10 days ago and today I was in theatre having this little git removed.
"His fast and incredible turn around was due to the fact he did not want to leave it any longer and wanted it out to prevent the rare risk of a LIPOMA turning into a sarcoma overtime.
"He also could not 100% confirm by the MRI that this was definitely a benign tumour and not something more sinister."
Mark said that tumour will be sent off for fourth testing to be "110% sure" it is nothing more.
"But this top doctor is certain from his incredible experience that we have done the job and there is nothing sinister to worry about. So I’m all good," he said.
The Heart Radio presenter ended his post: "MORAL OF THE STORY: If you notice anything that doesn’t look or feel quite right. Don’t leave it.
"Nothing in life is more important than your health and well-being. Get checked, check yourself and make sure you take good care of yourself."
Mark was quickly flooded with messages from his celeb pals.
Adam Thomas wrote: "Glad all is well bro."
"Back on the mend now son," Paddy McGuinness said.
Ex-Emmerdale actor Simon Lennon added: "Glad you’re alright, pal. Sending lots of love."
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