Surgeons in Cleveland say they have performed the America’s first uterus transplant, a new frontier that aims to give women who lack wombs a chance at pregnancy.

US surgeons say they have carried out the world's most extensive face transplant to date, including the entire scalp, ears and eyelids.

Scientists say they are a step closer to growing fully functioning replacement kidneys, after promising results in animals.

The world's first successful penis transplant has been reported by a surgical team in South Africa.