King Charles (L), Kate Middleton (R).Photo:Jane Barlow/WPA Pool/Getty; Visionhaus/Getty

Jane Barlow/WPA Pool/Getty; Visionhaus/Getty
King Charlesis supporting his daughter-in-lawKate Middletonamid her cancer diagnosis.
On Friday, the Princess of Wales, 42, shared apersonal videomessage that she is undergoing treatment after post-operative tests following herabdominal surgeryin January “found cancer had been present.”
Charles, 75, who is alsoundergoing cancer treatment, is “so proud of Catherine for her courage in speaking as she did,” a Buckingham Palace spokesperson tells PEOPLE.
King Charles and Princess Kate were both hospitalized at The London Clinic in January, and the monarch has “remained in the closest contact with his beloved daughter-in-law throughout the past weeks,” the spokesperson adds. Both King Charles andQueen Camilla"will continue to offer their love and support to the whole family through this difficult time."
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“In January, I underwent major abdominal surgery in London, and at the time, it was thought that my condition was non-cancerous,” she shared. “The surgery was successful. However, tests after the operation found cancer had been present. My medical team therefore advised that I should undergo a course of preventative chemotherapy, and I am now in the early stages of that treatment.”
Noting that the news was a “huge shock,” Princess Kate said that she andPrince William"have been doing everything we can to process and manage this privately for the sake of our young family. As you can imagine, this has taken time. It has taken me time to recover from major surgery in order to start my treatment."
Catherine, Princess of Wales, Prince William, Prince of Wales, known as the Duke and Duchess of Rothesay while in Scotland, King Charles III and Queen Camilla watch the Red Arrows flypast at Holyroodhouse following a National Service of Thanksgiving and Dedication to the coronation of King Charles III and Queen Camilla at St Giles' Cathedral on July 5, 2023 in Edinburgh, Scotland.Lesley Martin - Pool/Getty

Lesley Martin - Pool/Getty
“But, most importantly, it has taken us time to explain everything to George, Charlotte and Louis in a way that is appropriate for them, and to reassure them that I am going to be ok,” she said, referring to her three children:Prince George, 10,Princess Charlotte, 8, andPrince Louis, 5.
source: people.com