The world's fattest man Paul Mason underwent a nine and a half hour surgery to get rid of the loose skin that hung over his reported the Times of India. He weighed 444.5 kg and had lost 293 kg but his loose skin had become a big hindrance. He underwent the knife to get rid of that 23kg excess skin. Mason who is 54 hails from England and underwent the surgery at Lenox Hill Hospital in Manhattan. The surgery involved a lot of planning and also some good luck. The team that operated on Mason waived off all its fees.