London, UNITED KINGDOM - Catherine Princess of Wales, Kate Middleton, has released a video message in which she declares to have been diagnosed with cancer, right after the surgery she underwent last January in a London hospital. Her next step is undergoing a course of preventative chemotherapy. *UK Clients - Pictures Containing Children Please Pixelate Face Prior To Publication*,Image: 838057524, License: Rights-managed, Restrictions: RIGHTS: WORLDWIDE EXCEPT IN GERMANY, NETHERLANDS, Model Release: no, Pictured: Kate Middleton, Catherine, Princess of Wales, Prince William, Credit line: BACKGRID / Backgrid USA / Profimedia