Magnet ingestion: Difference between revisions
Ostermayer (talk | contribs) (Created page with "Magnet ingestion is a special category of ingested foreign body associated with high morbidity and mortality, particularly when multiple high-powered magnets or a magnet with another metallic object are swallowed.<ref name="Altokhais2021">Altokhais T. Magnet Ingestion in Children Management Guidelines and Prevention. ''Front Pediatr''. 2021;9:727988. doi:10.3389/fped.2021.727988</ref> ==Background== *Most commonly occurs in children <5 years of...") |
(Formatting: moved intro to Background bullets, removed excessive bold from bullet lead-ins) |
||
| Line 1: | Line 1: | ||
Magnet ingestion is a special category of [[Ingested foreign body|ingested foreign body]] associated with high morbidity and mortality, particularly when multiple high-powered magnets or a magnet with another metallic object are swallowed.<ref name="Altokhais2021">Altokhais T. Magnet Ingestion in Children Management Guidelines and Prevention. ''Front Pediatr''. 2021;9:727988. doi:10.3389/fped.2021.727988</ref> | ==Background== | ||
*Magnet ingestion is a special category of [[Ingested foreign body|ingested foreign body]] associated with high morbidity and mortality, particularly when multiple high-powered magnets or a magnet with another metallic object are swallowed.<ref name="Altokhais2021">Altokhais T. | |||
*Magnet Ingestion in Children Management Guidelines and Prevention. ''Front Pediatr''. 2021;9:727988. doi:10.3389/fped.2021.727988</ref> | |||
*Most commonly occurs in children <5 years of age, with a second peak in adolescents (ages 10-14) who use magnets to mimic oral/nasal piercings<ref name="Silverman2013">Silverman JA, Brown JC, Willis MM, Ebel BE. Increase in pediatric magnet-related foreign bodies requiring emergency care. ''Ann Emerg Med''. 2013;62(6):604-608.e1. doi:10.1016/j.annemergmed.2013.06.023</ref> | *Most commonly occurs in children <5 years of age, with a second peak in adolescents (ages 10-14) who use magnets to mimic oral/nasal piercings<ref name="Silverman2013">Silverman JA, Brown JC, Willis MM, Ebel BE. Increase in pediatric magnet-related foreign bodies requiring emergency care. ''Ann Emerg Med''. 2013;62(6):604-608.e1. doi:10.1016/j.annemergmed.2013.06.023</ref> | ||
*Adult cases are rare and typically associated with psychiatric disorders, intellectual disability, or self-harm<ref name="Carvalho2025">Carvalho R, et al. Enteroenteric Fistula Following Multiple Magnet Ingestion in an Adult: Case Report, Literature Review and Management Algorithm. ''Healthcare''. 2025;13(19):2523. doi:10.3390/healthcare13192523</ref> | *Adult cases are rare and typically associated with psychiatric disorders, intellectual disability, or self-harm<ref name="Carvalho2025">Carvalho R, et al. Enteroenteric Fistula Following Multiple Magnet Ingestion in an Adult: Case Report, Literature Review and Management Algorithm. ''Healthcare''. 2025;13(19):2523. doi:10.3390/healthcare13192523</ref> | ||
*Rare-earth (neodymium) magnets are up to 10 times stronger than conventional ferrite magnets and pose the greatest risk | *Rare-earth (neodymium) magnets are up to 10 times stronger than conventional ferrite magnets and pose the greatest risk | ||
*Incidence has risen significantly since 2002, correlating with availability of high-powered magnet desk toys and building sets<ref name="Reeves2018">Reeves PT, Nylund CM, Krishnamurthy J, Noel RA, Abbas MI. Trends of magnet ingestion in children, an ironic attraction. ''J Pediatr Gastroenterol Nutr''. 2018;66(5):e116-e121. doi:10.1097/MPG.0000000000001822</ref> | *Incidence has risen significantly since 2002, correlating with availability of high-powered magnet desk toys and building sets<ref name="Reeves2018">Reeves PT, Nylund CM, Krishnamurthy J, Noel RA, Abbas MI. Trends of magnet ingestion in children, an ironic attraction. ''J Pediatr Gastroenterol Nutr''. 2018;66(5):e116-e121. doi:10.1097/MPG.0000000000001822</ref> | ||
* | *Single magnet ingestion generally behaves like any other small blunt foreign body and usually passes without complication | ||
* | *Multiple magnets (or a magnet + metallic object) can attract across bowel walls, trapping intervening tissue and causing pressure necrosis within hours<ref name="Brown2014">Brown JC, Otjen JP, Drugas GT. Pediatric magnet ingestions: the dark side of the force. ''Am J Surg''. 2014;207(5):754-759. doi:10.1016/j.amjsurg.2013.12.028</ref> | ||
**Pressure ulceration can occur within 8 hours of ingestion<ref name="GIKids">GIKids.org. Magnet Ingestions. North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition. https://gikids.org/digestive-topics/magnet-ingestions/</ref> | **Pressure ulceration can occur within 8 hours of ingestion<ref name="GIKids">GIKids.org. Magnet Ingestions. North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition. https://gikids.org/digestive-topics/magnet-ingestions/</ref> | ||
**Staggered ingestion (magnets swallowed at different times) is especially dangerous as magnets may lodge in different segments of bowel | **Staggered ingestion (magnets swallowed at different times) is especially dangerous as magnets may lodge in different segments of bowel | ||
| Line 15: | Line 17: | ||
*Ingestion is frequently unwitnessed, especially in young children | *Ingestion is frequently unwitnessed, especially in young children | ||
*Symptoms are often nonspecific and may mimic [[Acute gastroenteritis|acute gastroenteritis]] | *Symptoms are often nonspecific and may mimic [[Acute gastroenteritis|acute gastroenteritis]] | ||
* | *Early symptoms: | ||
**Gagging, choking, or drooling at time of ingestion (if witnessed) | **Gagging, choking, or drooling at time of ingestion (if witnessed) | ||
**Nausea, vomiting (most common presenting symptom) | **Nausea, vomiting (most common presenting symptom) | ||
**Abdominal pain | **Abdominal pain | ||
**Decreased oral intake | **Decreased oral intake | ||
* | *Late/complicated symptoms: | ||
**Bilious vomiting | **Bilious vomiting | ||
**Abdominal distension and tenderness | **Abdominal distension and tenderness | ||
| Line 44: | Line 46: | ||
==Evaluation== | ==Evaluation== | ||
===Workup=== | ===Workup=== | ||
* | *Abdominal radiograph (AP view) — first-line imaging for all suspected ingestions | ||
**If magnets visualized on AP film, obtain a '''lateral view''' to help differentiate single vs. multiple magnets<ref name="NASPGHAN2012">Hussain SZ, Bousvaros A, Gilger M, et al. Management of Ingested Magnets in Children. ''J Pediatr Gastroenterol Nutr''. 2012;55(3):239-242. doi:10.1097/MPG.0b013e3182687f2f</ref> | **If magnets visualized on AP film, obtain a '''lateral view''' to help differentiate single vs. multiple magnets<ref name="NASPGHAN2012">Hussain SZ, Bousvaros A, Gilger M, et al. Management of Ingested Magnets in Children. ''J Pediatr Gastroenterol Nutr''. 2012;55(3):239-242. doi:10.1097/MPG.0b013e3182687f2f</ref> | ||
***Multiple magnets stacked together may appear as a single object on AP view | ***Multiple magnets stacked together may appear as a single object on AP view | ||
***Lateral view may reveal separation or layering that suggests multiple pieces | ***Lateral view may reveal separation or layering that suggests multiple pieces | ||
**Serial radiographs every 4-6 hours (in ED) or 8-12 hours (inpatient) to assess progression | **Serial radiographs every 4-6 hours (in ED) or 8-12 hours (inpatient) to assess progression | ||
* | *Labs: CBC, BMP, lipase if symptomatic; type and screen if concern for surgical intervention | ||
* | *CT abdomen/pelvis — consider if concern for perforation, obstruction, or unclear radiograph findings | ||
**Useful for identifying free air, free fluid, abscess | **Useful for identifying free air, free fluid, abscess | ||
**CT also lacks sensitivity for determining exact number of magnets<ref name="Altokhais2021"/> | **CT also lacks sensitivity for determining exact number of magnets<ref name="Altokhais2021"/> | ||
* | *Ultrasound — emerging adjunct to assess for bowel loop entrapment between magnets<ref name="Haynes2023">Haynes SA, et al. Ultrasound evaluation of intraluminal magnets in an ex vivo model. ''Pediatr Radiol''. 2023;53(12):2418-2426. doi:10.1007/s00247-023-05763-7</ref> | ||
*'''MRI is absolutely contraindicated''' — ferromagnetic foreign bodies may migrate, heat, or cause perforation in the magnetic field<ref name="Bailey2012">Bailey JR, Eisner EA, Edmonds EW. Unwitnessed magnet ingestion in a 5 year-old boy leading to bowel perforation after magnetic resonance imaging. ''Patient Saf Surg''. 2012;6:16. doi:10.1186/1754-9493-6-16</ref> | *'''MRI is absolutely contraindicated''' — ferromagnetic foreign bodies may migrate, heat, or cause perforation in the magnetic field<ref name="Bailey2012">Bailey JR, Eisner EA, Edmonds EW. Unwitnessed magnet ingestion in a 5 year-old boy leading to bowel perforation after magnetic resonance imaging. ''Patient Saf Surg''. 2012;6:16. doi:10.1186/1754-9493-6-16</ref> | ||
| Line 70: | Line 72: | ||
===Multiple magnets (confirmed or suspected)=== | ===Multiple magnets (confirmed or suspected)=== | ||
* | *Consult pediatric surgery and/or GI early | ||
*Management depends on symptoms, location, and time since ingestion: | *Management depends on symptoms, location, and time since ingestion: | ||
====Symptomatic patient==== | ====Symptomatic patient==== | ||
* | *Immediate removal is indicated<ref name="Altokhais2021"/> | ||
**Endoscopic removal if magnets are in the esophagus, stomach, duodenum, or colon | **Endoscopic removal if magnets are in the esophagus, stomach, duodenum, or colon | ||
**Surgical consultation if endoscopic removal fails or complications suspected | **Surgical consultation if endoscopic removal fails or complications suspected | ||
| Line 102: | Line 104: | ||
==Disposition== | ==Disposition== | ||
* | *Single confirmed magnet, asymptomatic: may discharge with caregiver education, return precautions, and outpatient follow-up with serial imaging until passage confirmed | ||
* | *Multiple magnets in esophagus or stomach: admit for endoscopic removal | ||
* | *Multiple magnets beyond the pylorus, progressing on serial films, asymptomatic: may discharge with very close outpatient follow-up and serial imaging if reliable caregiver | ||
* | *Multiple magnets beyond the pylorus, not progressing: admit for removal | ||
* | *Any symptomatic patient with multiple magnets: admit; surgical consultation | ||
*After any endoscopic or surgical removal, confirm all magnet pieces accounted for (correlate with radiographic count); intraoperative radiograph if discrepancy | *After any endoscopic or surgical removal, confirm all magnet pieces accounted for (correlate with radiographic count); intraoperative radiograph if discrepancy | ||
*Patients should be observed for a minimum of 4-6 hours after endoscopic removal or presentation before discharge<ref name="NASPGHAN2012"/> | *Patients should be observed for a minimum of 4-6 hours after endoscopic removal or presentation before discharge<ref name="NASPGHAN2012"/> | ||
Revision as of 16:04, 19 March 2026
Background
- Magnet ingestion is a special category of ingested foreign body associated with high morbidity and mortality, particularly when multiple high-powered magnets or a magnet with another metallic object are swallowed.[1]
- Most commonly occurs in children <5 years of age, with a second peak in adolescents (ages 10-14) who use magnets to mimic oral/nasal piercings[2]
- Adult cases are rare and typically associated with psychiatric disorders, intellectual disability, or self-harm[3]
- Rare-earth (neodymium) magnets are up to 10 times stronger than conventional ferrite magnets and pose the greatest risk
- Incidence has risen significantly since 2002, correlating with availability of high-powered magnet desk toys and building sets[4]
- Single magnet ingestion generally behaves like any other small blunt foreign body and usually passes without complication
- Multiple magnets (or a magnet + metallic object) can attract across bowel walls, trapping intervening tissue and causing pressure necrosis within hours[5]
- Pressure ulceration can occur within 8 hours of ingestion[6]
- Staggered ingestion (magnets swallowed at different times) is especially dangerous as magnets may lodge in different segments of bowel
Clinical Features
- Many patients are asymptomatic in the early phase, leading to delayed presentation[1]
- Ingestion is frequently unwitnessed, especially in young children
- Symptoms are often nonspecific and may mimic acute gastroenteritis
- Early symptoms:
- Gagging, choking, or drooling at time of ingestion (if witnessed)
- Nausea, vomiting (most common presenting symptom)
- Abdominal pain
- Decreased oral intake
- Late/complicated symptoms:
- Bilious vomiting
- Abdominal distension and tenderness
- Fever
- Signs of peritonitis (guarding, rigidity, rebound tenderness)
- Hematemesis or melena (uncommon)
- Symptoms progress with increasing duration of ingestion and proximity of magnets across bowel walls
Differential Diagnosis
Ingested foreign body (non-magnetic)
- Button battery ingestion
- Coin ingestion
- Sharp/pointed object ingestion
Abdominal pathology
- Acute gastroenteritis
- Appendicitis
- Intussusception
- Small bowel obstruction
- Bowel perforation
- Volvulus
Evaluation
Workup
- Abdominal radiograph (AP view) — first-line imaging for all suspected ingestions
- If magnets visualized on AP film, obtain a lateral view to help differentiate single vs. multiple magnets[7]
- Multiple magnets stacked together may appear as a single object on AP view
- Lateral view may reveal separation or layering that suggests multiple pieces
- Serial radiographs every 4-6 hours (in ED) or 8-12 hours (inpatient) to assess progression
- If magnets visualized on AP film, obtain a lateral view to help differentiate single vs. multiple magnets[7]
- Labs: CBC, BMP, lipase if symptomatic; type and screen if concern for surgical intervention
- CT abdomen/pelvis — consider if concern for perforation, obstruction, or unclear radiograph findings
- Useful for identifying free air, free fluid, abscess
- CT also lacks sensitivity for determining exact number of magnets[1]
- Ultrasound — emerging adjunct to assess for bowel loop entrapment between magnets[8]
- MRI is absolutely contraindicated — ferromagnetic foreign bodies may migrate, heat, or cause perforation in the magnetic field[9]
Diagnosis
- Diagnosis is confirmed by visualization of metallic foreign body on radiograph in the setting of known or suspected magnet exposure
- Critical determination is single vs. multiple magnets, which dictates the management pathway
- History alone may be unreliable — assume multiple magnets if unable to confirm definitively[10]
- If single vs. multiple cannot be reliably distinguished, manage as multiple
Management
Single magnet (confirmed)
- May be managed conservatively like other small blunt foreign bodies
- Outpatient observation with serial radiographs to confirm passage
- Ensure no co-ingestion of other metallic objects
- Caregiver education and return precautions
Multiple magnets (confirmed or suspected)
- Consult pediatric surgery and/or GI early
- Management depends on symptoms, location, and time since ingestion:
Symptomatic patient
- Immediate removal is indicated[1]
- Endoscopic removal if magnets are in the esophagus, stomach, duodenum, or colon
- Surgical consultation if endoscopic removal fails or complications suspected
- Surgical exploration (laparotomy or laparoscopy) if signs of peritonitis, perforation, or obstruction
Asymptomatic patient
- If magnets are in the esophagus or stomach → endoscopic removal[7]
- If magnets are beyond the pylorus:
- Serial abdominal radiographs every 4-6 hours to assess progression[1]
- If magnets progress distally on serial imaging → may continue observation with close follow-up and serial imaging until passage confirmed
- If magnets do not progress within 6 hours → removal indicated (endoscopic or surgical)[1]
- Consider polyethylene glycol (PEG) whole bowel irrigation to facilitate passage[10]
- Keep patient NPO until definitive management plan established
- Do not use a magnet placed externally on the abdomen to attempt to move ingested magnets
Complications of delayed treatment
- Bowel perforation
- Pressure necrosis
- Enteroenteric, jejunocolic, or tracheoesophageal fistula
- Small bowel obstruction
- Intussusception
- Volvulus
- Intra-abdominal or pelvic abscess
- Peritonitis and sepsis
- Short gut syndrome (in severe cases requiring extensive resection)[7]
- Death (rare but reported)[1]
Disposition
- Single confirmed magnet, asymptomatic: may discharge with caregiver education, return precautions, and outpatient follow-up with serial imaging until passage confirmed
- Multiple magnets in esophagus or stomach: admit for endoscopic removal
- Multiple magnets beyond the pylorus, progressing on serial films, asymptomatic: may discharge with very close outpatient follow-up and serial imaging if reliable caregiver
- Multiple magnets beyond the pylorus, not progressing: admit for removal
- Any symptomatic patient with multiple magnets: admit; surgical consultation
- After any endoscopic or surgical removal, confirm all magnet pieces accounted for (correlate with radiographic count); intraoperative radiograph if discrepancy
- Patients should be observed for a minimum of 4-6 hours after endoscopic removal or presentation before discharge[7]
- Caregiver education on prevention: remove small high-powered magnets from the home environment
See Also
- Ingested foreign body
- Button battery ingestion
- Small bowel obstruction
- Bowel perforation
- Peritonitis
- Intussusception
- Foreign bodies
External Links
- NASPGHAN Clinical Report: Management of Ingested Foreign Bodies in Children (2015)
- GIKids.org — Magnet Ingestions
- Altokhais T — Magnet Ingestion Management Guidelines and Prevention (2021)
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Altokhais T.
- Magnet Ingestion in Children Management Guidelines and Prevention. Front Pediatr. 2021;9:727988. doi:10.3389/fped.2021.727988
- ↑ Silverman JA, Brown JC, Willis MM, Ebel BE. Increase in pediatric magnet-related foreign bodies requiring emergency care. Ann Emerg Med. 2013;62(6):604-608.e1. doi:10.1016/j.annemergmed.2013.06.023
- ↑ Carvalho R, et al. Enteroenteric Fistula Following Multiple Magnet Ingestion in an Adult: Case Report, Literature Review and Management Algorithm. Healthcare. 2025;13(19):2523. doi:10.3390/healthcare13192523
- ↑ Reeves PT, Nylund CM, Krishnamurthy J, Noel RA, Abbas MI. Trends of magnet ingestion in children, an ironic attraction. J Pediatr Gastroenterol Nutr. 2018;66(5):e116-e121. doi:10.1097/MPG.0000000000001822
- ↑ Brown JC, Otjen JP, Drugas GT. Pediatric magnet ingestions: the dark side of the force. Am J Surg. 2014;207(5):754-759. doi:10.1016/j.amjsurg.2013.12.028
- ↑ GIKids.org. Magnet Ingestions. North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition. https://gikids.org/digestive-topics/magnet-ingestions/
- ↑ 7.0 7.1 7.2 7.3 Hussain SZ, Bousvaros A, Gilger M, et al. Management of Ingested Magnets in Children. J Pediatr Gastroenterol Nutr. 2012;55(3):239-242. doi:10.1097/MPG.0b013e3182687f2f
- ↑ Haynes SA, et al. Ultrasound evaluation of intraluminal magnets in an ex vivo model. Pediatr Radiol. 2023;53(12):2418-2426. doi:10.1007/s00247-023-05763-7
- ↑ Bailey JR, Eisner EA, Edmonds EW. Unwitnessed magnet ingestion in a 5 year-old boy leading to bowel perforation after magnetic resonance imaging. Patient Saf Surg. 2012;6:16. doi:10.1186/1754-9493-6-16
- ↑ 10.0 10.1 Kramer RE, Lerner DG, Lin T, et al. Management of Ingested Foreign Bodies in Children: A Clinical Report of the NASPGHAN Endoscopy Committee. J Pediatr Gastroenterol Nutr. 2015;60(4):562-574. doi:10.1097/MPG.0000000000000729