Kate Middleton (Princess of Wales) has not publicly disclosed the specific type of cancer she was diagnosed with. It was discovered following a major abdominal surgery in January 2024, initially performed for what was believed to be a noncancerous condition. After the surgery, tests revealed cancer was present, and she underwent preventative chemotherapy. Medical experts suggest that the cancer was found incidentally during surgery and could be related to abdominal organs, with speculation including possible uterine or ovarian cancer, but no official confirmation of the type has been given. Kate Middleton announced she completed chemotherapy and entered remission by September 2024, and she continues to focus on recovery.