A case of perforated jejunal diverticulitis in a 87 year old man is described and the literature is reviewed. Jejunal diverticulosis (JD) is estimated to occur in 0.02% to 1.3% of the adult population and is found most often in the elderly. The acute diverticulitis with perforation has been reported as high as 2.3% among patients with JD and is associated with high mortality. Clinical presentation mimic other more common acute intraperitoneal inflammatory conditions. Enteroclysis and abdominal CT are the most specific diagnostic tests. The common treatment is surgical resection of the involved seg -ment. Laparoscopic resection and medical and medical/radiological approaches have also been proposed. Diagnostic and therapeutical aspects of this pathology are discussed.