Enterolith ileus as a complication of small bowel diverticulosis.

We report a case of small bowel obstruction which was found to be due to an enterolith obstructing the distal ileum in the manner of "gallstone ileus." The enterolith had formed in an acquired jejunal diverticulum. We review the accepted mechanism of formation of these "stones" and propose a protocol for treatment of this rare complication.