09/11/2026
Before some babies ever take their first breath, surgeons may already be working to give their lungs a better chance.
FETO, or fetoscopic endoluminal tracheal occlusion, is a fetal procedure used for carefully selected babies with severe congenital diaphragmatic hernia (CDH). In CDH, the diaphragm does not form completely, allowing abdominal organs to move into the chest and limit the space lungs need to develop.
For babies with severe CDH, the central problem is often the lung itself. As pediatric surgeon Dr. Vincent Duron explains, “The primary morbidity in patients with CDH is that they’re born with a hypoplastic lung.”
During FETO, a tiny balloon is placed in the fetus’s trachea to temporarily block the airway. The goal is to keep lung fluid inside the developing lungs, creating pressure that encourages more lung tissue to grow before birth.
The balloon is later removed, and after delivery the baby is stabilized before surgeons repair the diaphragmatic hernia.
“By improving pulmonary outcomes, we hope to improve survival rates and overall outcomes,” says Dr. Duron.
Read more from Dr. Duron on cutting-edge fetal surgery, CDH, and Columbia’s FETO program at the link in bio.