[London, July 13. Image via Getty]

Hannah Clark, 16, poses for photographs in central London, on July 13, 2009. A British girl who had a donor heart grafted onto her own after suffering cardiac failure as a baby has had the transplant removed and is living a healthy life with her own heart, doctors said Tuesday. The case of Hannah Clark is thought to be the only one in the world where a child's failing heart recovered enough for the donor organ to be removed, the British surgeons told reporters ahead of their report in The Lancet journal. AFP PHOTO/Shaun Curry (Photo credit should read SHAUN CURRY/AFP/Getty Images)