Iatrogenic intussusception: a complication of long intestinal tubes.

Intussusception secondary to long intestinal tubes is a relatively uncommon but potentially fatal occurrence. From 1976 to 1979 we have studied five patients with this complication. The mercury-filled bag stimulates peristalsis, the tube is drawn forward, and there is resultant telescoping and "pleating" of the proximal small bowel. If these pleats become fixed by adhesions, they may act as a lead point for intussusception, even after tube withdrawal. Early diagnosis is essential for effective therapy.