Intussusception of the excluded segment following jejuno-ileal bypass.

Intussusception of the defunctionalized intestinal segment following jejuno-ileal bypass for obesity has rarely been reported. Persistent crampy abdominal pain (often accompanied by nausea and vomiting) and normal radiologic evaluation are suggestive of this entity. The routine use of silver clips, although helpful in some instances, cannot exclude this diagnosis. A high index of suspicion and the use of sonography may prove that intussusception of the defunctionalized segment is more common than has been previously reported.