Prince Philip, the 92-year-old husband of Britain's Queen Elizabeth, left hospital on Monday (June 17) .<br/> <br />Looking sprightly, the prince walked unaided from the London Clinic after 11 days of treatment including an exploratory operation on his abdomen.<br/> <br />Philip was taken to hospital on June 6 for the planned operation -- the fourth time he'd needed hospital treatment since Christmas 2011.<br/> <br />Buckingham Palace says Philip will take "a period of convalescence of approximately two months." He's expected to return to engagements in the autumn.
