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Fig. 3A —67-year-old man with history of duodenal mobilization during
recent abdominal aortic aneurysm repair (star). Abdominal CT (not
shown) was initially performed for evaluation of sudden severe epigastric pain
with intractable vomiting, and revealed gastric and proximal duodenal dilation
in presence of a duodenal mass. Axial (A) and coronal (B) MRI
small-bowel follow-through acquisitions, performed to characterize mass, show
coiled-spring appearance of duodenal intussusception (straight white
arrows). Duodenal wall is thickened (straight black arrow,
A) with surrounding edema (curved white arrow, A) and
fat stranding (curved black arrow, A). Duodenum is dilated
proximal to intussusception, despite nasogastric decompression.
