- Etiology: children love to put anything in their mouth and swallow it and the ingestion is usually unwitnessed, is a dynamic process of migration / penetration / reactive inflammation, may be present for a long time
- Imaging: obtain AP mouth to anus radiograph and use lateral radiograph of foreign body to localize and characterize it, foreign bodies get stuck at cricopharyngeal sling at C6 / aortic arch / lower esophageal sphincter / pylorus of stomach / ileocecal valve
- Complications: long standing esophageal foreign bodies can cause retropharyngeal soft tissue swelling leading to airway compression and narrowing + esophageal erosion / fistula
- Note: on AP radiograph a sagitally oriented coin is more likely in the esophagus than in the trachea
- Imaging of button battery: has beveled edge / halo / double rim on AP view + step off on lateral view while coin does not, two adjacent coins can mimic a button battery
- Complications of button battery: button battery can cause severe esophageal injury within 2 hours of ingestion due to pressure necrosis / chemical damage / electrical damage and must be removed immediately, button battery distal to esophagus is less susceptible to causing injury but it could have caused esophageal injury before it left esophagus, esophageal injuries from button battery include tracheoesophageal fistula / perforation / stricture / aortoenteric fistula
- Imaging of rare earth magnets: suspect when multiple magnets attract each other or 1 magnet and 1 metallic foreign body attract each other
- Complications of rare earth magnets: rare earth magnets must be removed immediately as they can cause ulceration / ischemia / necrosis / obstruction / perforation when two rare earth magnets in adjacent bowel loops attract each other
Radiology Cases of Gastrointestinal Foreign Body

Radiology Cases of Coin as Gastrointestinal Foreign Body

Radiology Cases of Button Battery as Gastrointestinal Foreign Body


Radiology Cases of Rare Earth Magnets (Neodymium Magnets) as Gastrointestinal Foreign Body

Gross Pathology Cases of Gastrointestinal Foreign Body
