ABSTRACT
Persistent bile-stained vomiting in a neonate led to a radiologic workup that revealed
the existence of a situs inversus and a partial duodenal obstruction. A duodenal diaphragm
with a central aperture was diagnosed. Surgery confirmed the preoperative diagnosis.
In addition, an annular pancreas with an anterior gap and a right parietocolic internal
hernia containing all the small bowel were discovered. Embryologie aspects, therapeutic
options, and the literature were discussed.