Princess Kate will have “unprecedented influence” if she goes public with her diagnosis, a royal commentator has claimed. Kate, 42, underwent “planned abdominal surgery” in January, however, no specific details about the operation were released to the public. Kensington Palace released a statement the day after the Princess of Wales’s “planned surgery”, asking the media not to speculate about the mother-of-three’s condition. It is unknown if the princess will open up about her hospitalisation once she returns to royal duties, which is likely to be after Easter. But Kate’s openness could have a…