Hannah Warren was born without a trachea. The defect occurs in 1 of 50,000 births. At 2-1/2 years old, she's the only one who's survived.
Surgeons created a new windpipe using the stem cells and a white plastic tube. Earlier this month, surgeons at Children's Hospital of Illinois successfully transplanted it. A few days later, another first, Hannah started to breathe on her own.
Hannah's parents, Darryl and Mi-Young Warren, say they plan to help other parents going through similar situations. Doctors say the surgery opens a field of possibilities to help children born with birth defects.