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Updated: May 12, 2026

Handheld Metal Detector Screening for Metallic Foreign Body Ingestion in Children
Published on: September 11, 2018
Swallowed magnets and batteries: a dangerous but not unexpected attraction
Warwick Jonathan Teague1, Elizabeth Mary Vaughan, Merrill McHoney
1Department of General Surgery, Royal Hospital for Sick Children Edinburgh, Edinburgh, UK.
Insights
Ingesting multiple magnetic objects can lead to serious complications like fistulas, even without immediate symptoms. Prompt inpatient evaluation and surgical removal are crucial for children swallowing more than one magnet.
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Medical Imaging
Background:
- Swallowing foreign bodies is common in children.
- Multiple ingested magnets pose unique risks due to magnetic attraction.
- Delayed diagnosis can lead to severe gastrointestinal complications.
Purpose of the Study:
- To highlight the risks of delayed management for children ingesting multiple magnetic objects.
- To emphasize the potential for serious complications, such as jejunocolic fistula.
- To recommend appropriate management strategies for such cases.
Main Methods:
- Case report of an 18-month-old boy who swallowed multiple magnetic balls, a watch battery, and a screw.
- Initial outpatient management with serial X-rays.
- Delayed inpatient surgical intervention (laparotomy) after 9 days.
Main Results:
- A jejunocolic fistula was confirmed during emergency laparotomy.
- The child had no initial signs of gastrointestinal distress.
- Outpatient management proved unsuccessful, leading to delayed surgical care.
Conclusions:
- Clinical assessment alone can be misleading in cases of multiple magnet ingestion.
- Outpatient management of multiple magnetic foreign bodies is potentially dangerous.
- Inpatient management with active observation and timely removal is recommended for children ingesting multiple magnetic objects.
Abstract:
An 18-month-old boy was witnessed swallowing a cluster of five magnetic toy balls. He was coincidentally noted on plain x-rays to have also recently swallowed a watch battery and a small screw. Initial outpatient management with serial review and x-rays was unsuccessful, and delayed inpatient surgical care by 9 days. Although the child never manifested features of systemic or gastrointestinal upset, emergency laparotomy confirmed a resultant jejunocolic fistula. This case demonstrates how clinical assessment of children who have swallowed magnets separately from each other can be falsely reassuring, and highlights the potential dangers of outpatient management. We recommend children who have swallowed separately >1 magnetic objects (or >1 objects capable of magnetic attraction) be managed as inpatients with active observation and timely foreign body removal.
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