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Enteroenteric (ileoileal) intussusception secondary to colic obstruction caused by a sigmoid cancer. Intussusception appears as a small target mass (a, b) in a condition of intestinal obstruction with massive small and large bowel dilatation, due to stenosing sigmoid cancer (d). Coronal (e) and sagittal (f) reformatting better depict the site and the extent of intussusception.
