Kate Middleton recently shared details about her abdominal surgery, but one health concern that has only been briefly mentioned is her head scar. Kensington Palace announced on Wednesday Kate Middleton underwent a “planned abdominal surgery” at The London Clinic on the previous day. It was the first time the palace disclosed information about the Princess Of Wales’ health, aside from her severe morning sickness during her pregnancy with Prince Louis. One health concern that has remained unexplained is her head scar, which royalists first noticed in 2011. Kate Middleton is tight-lipped about he…