4 yr old FS DSH with acute onset vomiting (2-3 days) and anorexia for 2 days.
Radiographs show a distended bowel loop with content the same radio-opacity as fecal material in the region of the ICC junction.
Abdominal ultrasound shows mild gastric fluid distension. The pyloric outflow is unobstructed. The orad duodenum shows a small amount of intraluminal fluid. The mid desceding duodenum shows corrugation and echogenic intraluminal content. The duodenal wall is thickened.