Double bubble sign (duodenum)

Changed by Ian Bickle, 19 Jan 2022

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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:

congenital obstruction
midgut volvulus
external compression of the duodenum
- choledochal cyst
- mesenteric duplication cyst
- intramural duodenal haematoma
- preduodenal portal vein
- retroperitoneal tumour
- superior mesenteric artery syndrome

~~-<li><a title="mesenteric duplication cyst" href="/articles/mesenteric-duplication-cyst">mesenteric duplication cyst</a></li>~~
+<li><a href="/articles/mesenteric-duplication-cyst">mesenteric duplication cyst</a></li>

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Image 10 Fluoroscopy (AP ) ( create )

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