&NA;In the past two decades, several reports have documented inflammatory changes in acquired diverticula of the terminal ileum and their associated complications, namely, perforation, intestinal obstruction, gastrointestinal hemorrhage, and fistulization. A comprehensive review revealed 28 cases of diverticulitis of the terminal ileum documented in the world medical literature. Only one case of internal fistula (ileovesical) has been reported previously. This report describes another patient with diverticulitis of the terminal ileum with associated perforation and jejunoileal fistula and reviews the world literature.