What sign is apparent and what does it represent?
"Double bubble sign" - duodenal atresia.
What is the prevalence of duodenal atresia?
Approximately 1 in 5000-10 0000 births. Equal sex distribution.
What differential diagnoses of the "double bubble sign" on ultrasound should be considered?
Duodenal stenosis, duodenal web, intestinal malrotation or volvulus.