Intussusception of the small bowel secondary to an enterolith from a jejunal diverticulum

We report a case of acute, small bowel obstruction secondary to intussusception caused by an enterolith from a jejunal diverticulum, in an elderly female with a history of chronic, intermittent abdominal pain. Diagnostic work-up of the patient included a computed tomographic (CT) scan which demonstrated the intussusception, but not the enterolith, which was characteristically radiolucent. A laparotomy was performed and the enterolith was found and delivered. A fistula between the gallbladder and small bowel was sought, but not found. Multiple diverticulae were found throughout the small bowel. Although small bowel diverticulosis is rare, it should be considered in the differential diagnosis of the acute abdomen and chronic abdominal pain, especially in those with known colonic diverticulosis, in whom this condition is more common.