Presentation
Antenatal scan.
Patient Data
Age: 30 years
Gender: Female
From the case:
Duodenal atresia - double bubble sign
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31 weeks fetus. The fetal abdomen shows dilated stomach and the first part of the duodenum, suspicious for duodenal atresia. In cross-section, giving the appearance of a double bubble sign.
Case Discussion
Double bubble sign is an antenatal sign suggesting duodenal obstruction by web, stenosis or atresia. It appears in cross-section through the stomach body and duodenal bulb. In an oblique scan, the stomach can be seen dilated and the duodenal bulb with no dilatation of other segments of the duodenum. This sign can also be depicted on postnatal plain radiograph depending on gas shadows.
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