Delayed appendicitis from an ingested foreign body.

An unusual case of acute appendicitis induced by a metal drill bit that was ingested by a 27-year-old man 3 years before presentation is reported. This foreign body lodged in the patient's appendix and developed a fecalith coating. When this fecalith coating enlarged enough to obstruct the appendiceal lumen, the patient presented with classic acute appendicitis. Foreign body-induced appendicitis is reviewed.