First AD

Second AD

Name the structure shown by arrows in these images of the fetal thorax.

The fetal esophagus is seen distended with ingested fluid during deglutition. It lies anterior to the thoracic aorta and behind the left atrium in these axial sections. It's also important to look for the fetal stomach bubble to rule out esophageal atresia.

Pregnancy and Birth

News

Challenge your anatomy skills: Can you identify the structure of interest in these images of the fetal thorax?

Image IQ: Fetal Thorax

Joe Antony, MD