Former British Prime Minister David Cameron has revealed he has been treated for prostate cancer.
Lord Cameron, 59, told the Times newspaper his wife had insisted he go for a check-up after they listened to a BBC radio interview with entrepreneur Nick Jones, who was campaigning for more men to be tested after being diagnosed himself.
The Tory peer had a prostate-specific antigen (PSA) test earlier this year, followed by an MRI scan and a biopsy. He was then treated with focal therapy, which targets the area where the tumour is present using methods such as ultrasound waves to destroy cancer cells.
Prostate cancer is the most common cancer in males in the UK, with around 55,000 new cases every year.
A PSA test looks for proteins associated with prostate cancer and the result was high in Lord Cameron's case.
He told the newspaper he wanted to use his platform to support a call by Prostate Cancer Research, a charity which counts Mr Jones - founder of private members' club chain Soho House - as a trustee, for screening to be offered to high-risk men.
The cancer is most common in older age - particularly among men over 75. Cases in the under-50s are rare. It is also more common in black men.
"I don't particularly like discussing my personal intimate health issues, but I feel I ought to," Lord Cameron said.
"Let's be honest. Men are not very good at talking about their health. We tend to put things off."
But he said: "I sort of thought, well, this has happened to you, and you should lend your voice to it."
Lord Cameron, Conservative prime minister between 2010 and 2016, and later foreign secretary in Rishi Sunak's government, told the Times: "I would feel bad if I didn't come forward and say that I've had this experience.
"I had a scan. It helped me discover something that was wrong. It gave me the chance to deal with it."
There is currently no screening programme for prostate cancer in the UK because of concerns about the accuracy of PSA tests.
A high PSA does not always mean cancer. It can go up if there is an infection, for example.
Currently, men over 50 can request a PSA test, which looks for abnormally high levels of protein in the blood, but this is unreliable, picking up many prostate cancers that would never need treatment, and missing others that do.
Some men with a raised PSA may have a prostate cancer that would not have caused problems or needed treatment, causing unnecessary worry and further investigations.
What are the symptoms of prostate cancer and what should you check for?
Screening question
The peer's intervention comes as the UK National Screening Committee (NSC) is due to announce its decision on whether there is enough evidence to support the introduction of a national prostate cancer screening programme.
It would then be for ministers to decide whether to follow the advice.
Mr Jones said it was a "crucial week" as the NSC meets to weigh up the costs and benefits.
Speaking to BBC Radio 4's Today programme, he urged NSC members to make "the right decision" by approving an initial screening rollout for black men and those with history of prostate cancer, before widening it to all.
He said he chose to speak about prostate cancer in the radio interview that triggered Lord Cameron's test "because I felt I was very lucky and I felt everyone should get that luck" of surviving the disease.
"I play a very small part of this and I obviously feel delighted [that the interview made a difference] but it shouldn't be me coming into radio studios talking about it," he said.
Last week, a major prostate cancer screening trial began in the country. It is aimed at finding the best way to detect the disease by comparing it to current NHS diagnostic practices - which can include blood tests and biopsies.
Prostate Cancer UK is jointly funding the programme. Its director of health services Chiara De Biase praised Lord Cameron for sharing his story and raising "vital awareness".
"We lose 12,000 dads, brothers, sons and friends to this disease every year. We've reached a tipping point in the UK, with too many men dying from a curable disease," De Biase said.
"Prostate cancer is the last major cancer without a screening programme, and we need change now."
The National Institute for Health and Care Research, which is the other funder of the trial, said the results "could help shift the evidence in favour of screening in as little as two years" if the committee decides against a national rollout this week.
Around one in eight men will develop prostate cancer in their lives, according to Prostate Cancer UK, with research showing it has overtaken breast cancer as the most commonly diagnosed form of the disease in the UK.
Last year, the Scottish cycling champion Sir Chris Hoy called for more younger men to be tested for prostate cancer, following his own diagnosis.
Sir Chris, 49, has advanced cancer that has spread to his bones and is terminal. It was discovered after a routine scan for shoulder pain revealed a tumour.
Speaking to the BBC last November about his diagnosis, the Olympic champion said it was "the biggest shock of my life". He added: "My perspective on life has changed massively. I am more thankful, I'm more grateful for each day."