Practice Question

A 2-day-old full-term newborn develops repeated vomiting shortly after feeds. The abdomen is mildly distended but soft. He has passed meconium once. A nasogastric tube drains bilious fluid. The team is most worried about malrotation with midgut volvulus. Please select the imaging study and findings that would be most consistent with this diagnosis.

A. KUB showing a duodenojejunal junction that fails to cross midline

B. An upper GI study showing a double bubble with no distal bowel gas

C. An upper GI study showing a duodenojejunal junction that fails to cross midline

D. An abdominal ultrasound with contrast that shows a corkscrew appearance of the bowel

Please see the comments below for the answers!