King Charles III has been diagnosed with cancer, Buckingham Palace has confirmed.

The King has been diagnosed with a form of cancer and has begun a schedule of regular treatments, and while he has postponed public duties he “remains wholly positive about his treatment”, Buckingham Palace said.

The diagnosis comes after the 75-year-old monarch was recently admitted to hospital because of an enlarged prostate, although the palace says he does not have prostate cancer.

Buckingham Palace said: “During the King’s recent hospital procedure for benign prostate enlargement, a separate issue of concern was noted. Subsequent diagnostic tests have identified a form of cancer.

“His Majesty has today commenced a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties. Throughout this period, His Majesty will continue to undertake State business and official paperwork as usual.

“The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure. He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible.

“His Majesty has chosen to share his diagnosis to prevent speculation and in the hope it may assist public understanding for all those around the world who are affected by cancer.”

At that time, the Palace told the public: “In common with thousands of men each year, the King has sought treatment for an enlarged prostate.

“His Majesty’s condition is benign, and he will attend hospital next week for a corrective procedure. The King’s public engagements will be postponed for a short period of recuperation.”

The King was eventually discharged after spending three nights in a Central London hospital.

Following his stay at the medical facility, a spokesman said: “The King was this afternoon discharged from hospital following planned medical treatment and has rescheduled forthcoming public engagements to allow for a period of private recuperation.”

Sources close to the Royal Family praised The London Clinic for the security measures put in place during Charles and Kate Middleton's stay.