Foreign bodies in the gastrointestinal tract and anorectal emergencies.

Of all ingested foreign bodies (FBs) brought to the attention of physicians (probably a small minority of the total), 80% to 90% pass spontaneously; however, 10% to 20% require endoscopic removal, and about 1% require surgery. The article divides the GI tract into regions in which the anatomy, presentation, clinical findings, and management of FBs are distinct. The final third of this article describes the management of anorectal emergencies. An understanding of anatomy and common pathological conditions allows the emergency physician to make a diagnosis and provide relief and/or resolution in most cases.