Fig. 3
From: Endoscopic features for early decision to evaluate superior mesenteric artery syndrome in children
The Proportion of superior mesenteric artery syndrome according to the findings of endoscopy in the enrolled patients. Feature A, a pulsatile vertical or oblique band or slit like luminal narrowing with opening less than one third of the third part of the duodenum during air insufflation; Feature B, feature A plus a proximal duodenal dilation from the third part of the duodenum; Feature C, feature A plus a large amount of bile mixed fluid (bile lake) in the stomach; Feature D, feature B plus bile lake