An uncommon etiology of small bowel obstruction: gallstone ileus.

Gallstone ileus is a rare etiology of small bowel obstruction, occurring typically in the elderly population. The delay in diagnosis often results in significant morbidity and mortality. Here, we describe a case of 67 year old woman who presented with non specific abdominal symptoms and on evaluation was found to have small bowel obstruction caused by wedging of a large gallstone at the terminal ileum.