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.
Courtesy of Dorothy I Bulas, MD.
Graphic 70937 Version 4.0
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