Table 1 Differential diagnoses to consider when the double bubble sign is seen on antenatal ultrasound
From: Antenatally detected cystic biliary atresia: differential diagnoses of a double bubble
Site of pathology | Differential diagnoses |
|---|---|
Luminal obstruction | Duodenal atresia |
Duodenal stenosis | |
Jejunal atresia | |
Extra-luminal obstruction | Intestinal malrotation |
Annular pancreas | |
Diaphragmatic hernia | |
Hepatobiliary | Cystic choledochal malformation |
Developmental hepatic cyst | |
Cystic biliary atresia | |
Other GI | Duplication cyst |
Non-gastrointestinal | Omental cyst, ovarian cyst, renal cyst |
Non-pathological | Transient bubble associated with slow peristalsis |