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FIGURE 116.9 Malrotation with volvulus. A: Normal small bowel mesenteric attachment (as
demonstrated by the arrow ). This prevents twisting of small bowel because of the broad
fixation of the mesentery. B: Malrotation of colon with obstructing duodenal bands. C: Midgut
volvulus around the superior mesenteric artery caused by the narrow base of the mesentery.