Intussusception following jejunoileal bypass: case report and review of the literature.

Jejunoileal bypass carries a number of potential complications, one of which is intussusception of the excluded segment. The incidence of this complication is probably about one to two per cent. The usual symptoms consist of intermittent episodes of colicky abdominal pain. The roentgenographic diagnosis is difficult because the condition occurs at the blind end of the excluded segment and it is not possible to reflux contrast material to this area. If the intussusception is associated with severe gastrointestinal hemorrhage, selective angiography may provide the diagnosis.