Royals British Royal Family King Charles Informed of Kate Middleton's Cancer Diagnosis as He Also Undergoes Treatment for Cancer On Feb. 5, King Charles announced he was undergoing treatment for cancer By Jordan Greene Jordan Greene Jordan Greene is Society and Culture writer-reporter at PEOPLE. She has been working at PEOPLE since 2023. Her work has previously appeared on TODAY.com, The Forward and The Daily Orange. People Editorial Guidelines Updated on March 22, 2024 02:38PM EDT Kate Middleton and King Charles. Photo: Chris Jackson/Getty; Andrew Milligan - WPA Pool/Getty King Charles and Queen Camilla have been informed of Kate Middleton's cancer news. On Friday, Princess Kate, 42, shared the health update in an Instagram video, which comes after Kensington Palace announced in January that she had undergone a "planned abdominal surgery." "The surgery was successful. However, tests after the operation found cancer had been present," she says in the personal video message. "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." The news reached the King, 75, amid his own cancer diagnosis, which he revealed in February after undergoing treatment for an enlarged prostate. "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," the palace said in a statement at the time. "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." King Charles, 75, Announces Cancer Diagnosis, Postpones All Future Engagements for Now Kate Middleton and King Charles in Sept. 2022. Stefan Rousseau - WPA Pool/Getty A Buckingham Palace spokesperson said that King Charles is "so proud of Catherine for her courage in speaking as she did." 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." Both King Charles and Queen Camilla "will continue to offer their love and support to the whole family through this difficult time." Kate Middleton, Prince William, King Charles and Queen Camilla in Scotland for a coronation celebration on July 5, 2023. Lesley Martin - Pool/Getty In her personal video, Princess Kate shared why she's chosen now to reveal her cancer treatment. "As you can imagine, this has taken time. It has taken me time to recover from major surgery in order to start my treatment. 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 in the video. Kate Middleton Receives Good News About Her Passion Project amid Surgery Recovery Kate Middleton, Princess of Wales is driven down The Mall after the funeral for HM Queen Elizabeth II's funeral on September 19, 2022 in London, England. Tom Jenkins - WPA Pool/Getty "As I have said to them; I am well and getting stronger every day by focusing on the things that will help me heal; in my mind, body and spirits," she added. "Having William by my side is a great source of comfort and reassurance too. As is the love, support and kindness that has been shown by so many of you. It means so much to us both." She continued, "At this time, I am also thinking of all those whose lives have been affected by cancer. For everyone facing this disease, in whatever form, please do not lose faith or hope. You are not alone."