Fig. 4
From: Upper gastrointestinal series in children: what surgeons need to know
UGI series of two different patients with duodenal abnormalities presenting with bilious vomiting. a Case of intestinal malrotation and midgut volvulus (arrow). b Ultrasound and Doppler transverse sonogram showing “whirl”-like pattern of small bowel loops. c, d A case of superior mesenteric artery syndrome showing dilated duodenum with persistent filling defect at its third part; sagittal CT angiography showing decreased aortomesenteric angle