Gallstone ileus of the sigmoid colon: a rare complication of cholelithiasis.

The authors report a case of gallstone ileus of the sigmoid colon in an 80-year-old woman admitted to the hospital with symptoms and signs of large bowel obstruction and asymptomatic cholelithiasis. Radiological investigation (abdominal X-ray and CT scan) showed a large gallstone impacted in the sigmoid colon. At first, the patient was managed conservatively, but the recurrence of the intestinal obstruction required open cholecystectomy, suturing of the colonic fistula and sigmoidectomy.