Kate Middleton has not publicly disclosed the specific type of cancer she was diagnosed with. After undergoing major abdominal surgery in January 2024, cancer was found during testing, but the exact diagnosis has not been revealed by her or Kensington Palace. Medical experts have speculated that it could be uterine or ovarian cancer, as these cancers can present similarly with abdominal masses initially thought to be cysts or fibroids. Following surgery, she underwent a course of preventative chemotherapy and is now in remission, focusing on recovery.