Obstructive, pseudo-obstructive and enteropathic syndromes after jejunoileal bypass.

We have encountered two patients with volvulus of the small intestine at the ileocolic anastomosis, occurring after jejunoileal bypass. This uncommon complication is generally seen many months after bypass and may be difficult to diagnose. Barium enema examination was helpful in one patient. If there are acute, severe abdominal symptoms, mechanical obstruction and early operation should be considered. Attention has been called to other intestinal syndromes with obstructive features developing after jejunoileal bypass, and these have been compared.