Acute appendicitis is a disease of the youn most presenting in children and adolescents (5-15 elderly can be affected. P foration typically years, but even is most likely in the very young and the elderly appendicitis is 7% to 10% incidence of acute of appendicitis is believed by some rough The pathogenesis clinicians to reflect an initial insult to the mucosa obstruction by a fecalith resulting from luminal fragment of undigested food, or lymphoid hyperplasia, infection that progressively followed by bacterial spreads from the mucosa into the wall. Approximately 70% of patients suspected to have appendicitis on clinical and imaging grounds have it on resection. Some observers believe that all appendices should be removed appendicitis, even during surgery for suspected acute when grossly normal, since nearly 20% of normal appearing appendices may have acute inflammation on examination. A possible exception would microscopic be those patients who might require urologic surgery in the future, as their appendices may later serve as appendicitis in the urinary conduits. Patients with setting of human presentations, virus (HIV) immunodeficiency infection have similar clinical although sometimes with a less striking elevation in peripheral white blood cell count. In one surgical seri of appendicitis and HIV infection, delays prior to operation increased the likelihood of perforation.