LONDON - Prince Philip, the 91-year-old husband of Britain's Queen Elizabeth, was to undergo "exploratory" surgery on his abdomen on Friday.
His wife of 65 years carried on with her official engagements, visiting the BBC just half a mile from the hospital where Philip's operation will take place.
Philip, who turns 92 next week, was admitted to the London Clinic on Thursday and is expected to remain for two weeks after what Buckingham Palace described as "an exploratory operation following abdominal investigations".
Royal aides said the surgery would be done on Friday. It will be fourth time Prince Philip, also known as the Duke of Edinburgh, has undergone hospital treatment since Christmas 2011.