• M Hogan and J F Johnson.
• Department of Radiology, Children's Hospital, 700 Children's Drive, Columbus, OH 43205, USA.
• Pediatr Radiol. 1996 Jan 1;26(6):405-8.

AbstractObjective. To determine whether ileoileocolic intussusception can be diagnosed by a distinctive appearance during pneumatic reduction. Materials and methods. We reviewed the clinical, pathologic, and imaging findings of 11 patients with ileoileocolic intussusceptions seen in our hospital between January 1989 and July 1994. The patients ranged in age from 4 months to 4 years and 2 months. We specifically evaluated the appearance of these intussusceptions on air enemas performed in nine of these patients. Another 22 air enemas of all patients with surgically proven ileocolic intussusception seen during the same time period were also reviewed for comparison. Results. In seven of the nine patients with ileoileocolic intussusception who had air enemas, the intussusceptum clearly had two or more separate polypoid components once it was reduced to the cecum. This distinctive appearance was not seen until the intussusceptum was tethered at the ileocecal valve. The intussusceptum was also reduced to the cecum in 19 patients from the control group with ileocolic intussusception. In contrast to the ileoileocolic intussusceptums, these intussusceptums were either smoothly marginated (16 patients) or slightly lobular (three patients). Conclusion. In most patients with ileoileocolic intussusception, the intussusceptum has two or more polypoid components at the level of the ileocecal valve which are easily distinguished from the smoothly marginated or slightly lobular intussusceptum seen with ileocolic intussusception.

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