Double bubble sign | definition of double bubble sign by Medical dictionary
double bubble sign
dou·ble bub·ble sign
in pediatric radiology, appearance of the dilated air-filled stomach and duodenal bulb, associated with duodenal atresia or web, less often midgut volvulus.A radiologic finding in which there are 2 distinct gas pockets in an upper GI radiocontrast study, seen in those with atresia of the 2nd segment of the duodenum, 20–30% of whom have Down syndrome; the larger left bubble corresponds to gastric gas; the smaller right bubble corresponds to gas in the duodenal bulb. The double bubble sign may also occur in an annular pancreas with/without duodenal atresia, duodenal stenosis, peritoneal bands and volvulus. The sign is correspondingly smaller if there is passage of air
References in periodicals archive
The double bubble sign indicates the presence of duodenal obstruction that can be caused by a number of intrinsic or extrinsic etiologies.
Duodenal atresia is the causative entity most commonly linked with a double bubble sign.