Double bubble sign (duodenum)

Last revised by Dr Rengarajan R on 28 Jul 2021

The double bubble sign is seen in infants and represents dilatation of the proximal duodenum and stomach. It is seen in both radiographs and ultrasound, and can be identified antenatally 2.

Pathology

Causes include 1,2:

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Cases and figures

  • Figure 1: analogous photograph : double bubble
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  • Case 1: from superior mesenteric artery syndrome
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  • Case 2: duodenal atresia with double bubble sign
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  • Case 4
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  • Case 5: duodenal atresia
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  • Case 6
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  • Case 7
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  • Case 8: with polyhydramnios and single umbilical artery
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