King Charles’ shockingcancer crisisis this week’s PEOPLE cover story. An exclusive extract follows below.

KING CHARLES PEOPLE COVER

Although the statement offered few details, the palace did reveal that when Charles underwent his prostate procedure, a separate issue of concern was detected, and “subsequent diagnostic tests have revealed the presence of a form of cancer." (The type of cancer has not been disclosed in keeping with the palace’s tight-lipped approach to medical conditions, but it is not prostate cancer, a spokesman confirmed.)

“In time we might know,” Robert Hardman, author ofThe Making of a King: King Charles III and the Modern Monarchy, tells PEOPLE exclusively in this week’s issue. “but for now, there is a feeling that they have been pretty open.”

KING CHARLES PEOPLE COVER

The King has begun “regular treatments” and will postpone public duties, the palace statement added, noting that Charles “remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible.”

Adds a source who knows him, “He has not looked himself. I put it down to grief—he’d had two deaths close together [his mother,Queen Elizabeth, in Sept. 2022 and his father,Prince Philipin April 2021]—but maybe he wasn’t well, without realizing so. It would take it out of him.”

Prince George of Wales (in his role as Page of Honour) and King Charles III watch an RAF flypast from the balcony of Buckingham Palace following the Coronation of King Charles III & Queen Camilla at Westminster Abbey on May 6, 2023 in London, England. The Coronation of Charles III and his wife, Camilla, as King and Queen of the United Kingdom of Great Britain and Northern Ireland, and the other Commonwealth realms takes place at Westminster Abbey today. Charles acceded to the throne on 8 September 2022, upon the death of his mother, Elizabeth II.

The news comes just nine months into Charles’s reign and only 17 months after the death of Queen Elizabeth at age 96.

It also marks a particularly difficult start to the new year for the royal family: on Jan. 16, Princess Kate, 42, underwent a 13-day hospitalization for abdominal surgery—prompting Prince William’s temporary withdrawal from public duty to care for Kate and the couple’s three children, Prince George, 10, Princess Charlotte, 8, and Prince Louis, 5.

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The potential for increased responsibilities for his son and heir, William, 41, once again highlighted the royal family’s thinned ranks since the departure of Charles’s younger son Prince Harry, 39, and the removal of Charles’s scandal-plagued brother Prince Andrew, 63.

Says a palace insider: “He will want to get on with the job. But that will depend on what treatment he is having. It may be utterly draining on him. He will need a lot of support.”

For more on this story, pick up this week’s issue of PEOPLE on newsstands Friday.

source: people.com