Prenatal ultrasound image of duodenal atresia

Fetus at 22 weeks of gestation.
(A) Axial ultrasound of the fetal abdomen shows a dilated stomach next to a dilated duodenum.
(B) Coronal T2w magnetic resonance image confirms the presence of a "double bubble" with high signal fluid in the stomach and dilated duodenum. Amniocentesis revealed trisomy 21.