<Li> fibrous bands (of Ladd) course over the vertical portion of the duodenum (DII), causing intestinal obstruction . </Li> <Li> the small intestine has an unusually narrow base, and therefore the midgut is prone to volvulus (a twisting that can obstruct the mesenteric blood vessels and cause intestinal ischemia). </Li> <P> Patients (often infants) present acutely with midgut volvulus, manifested by bilious vomiting, crampy abdominal pain, abdominal distention, and the passage of blood and mucus in their stools . Patients with chronic, uncorrected malrotation can have recurrent abdominal pain and vomiting . </P> <P> Malrotation can also be asymptomatic . </P>

Is the small intestine on the left or right side