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Updated: Aug 19, 2026

Handheld Metal Detector Screening for Metallic Foreign Body Ingestion in Children
Published on: September 11, 2018
Symptoms and spontaneous passage of esophageal coins
G P Conners1, J M Chamberlain, D W Ochsenschlager
1Emergency Medical Trauma Center, Children's National Medical Center, Washington, DC.
Insights
Coins in the upper esophagus require immediate removal. Distal esophageal coins in children have a high chance of spontaneous passage, warranting observation before intervention. Esophageal coin ingestion necessitates imaging for all cases.
Area of Science:
- Pediatric Gastroenterology
- Emergency Medicine
- Radiology
Background:
- Esophageal coin ingestion is common in children.
- Location of esophageal coins may influence spontaneous clearance.
- Asymptomatic coin ingestion occurs in a subset of pediatric patients.
Purpose of the Study:
- To compare spontaneous clearance rates of esophageal coins based on location.
- To determine the frequency of asymptomatic esophageal coin ingestion in children.
Main Methods:
- Retrospective case review of 73 children with esophageal coins.
- Analysis of coin location (proximal, middle, distal esophagus) via roentgenography.
- Review of medical records for symptoms and removal procedures.
Main Results:
- All proximal and middle esophageal coins (58 children) required invasive removal.
- 60% of distal esophageal coins (9/15 children) cleared spontaneously.
- 7% of children (5/73) with esophageal coins were asymptomatic.
Conclusions:
- Prompt removal of proximal and middle esophageal coins is recommended.
- Observation for up to 24 hours is suggested for distal esophageal coins due to high spontaneous clearance rates.
- All children with suspected coin ingestion should undergo roentgenographic evaluation due to potential asymptomatic presentation.
Objectives:
To determine whether coins located in different portions of the esophagus differ in their likelihood of spontaneous clearance, and to determine the frequency of asymptomaticity among children with esophageal coins.
Design:
Retrospective case review.
Setting:
Pediatric academic tertiary care center.
Patients:
All 73 children presenting in an 18-month period to a pediatric emergency department for coin ingestion whose roentgenographic evaluation revealed an esophageal coin.
Interventions:
None.
Outcome Measures:
Hospital records of all children were reviewed for demographic information, coin denominations, esophageal locations of ingested coins based on roentgenographic reports, performance of invasive removal procedures, and the presence or absence of signs and/or symptoms.
Results:
All of the 58 children with proximal or middle esophageal coins underwent invasive removal procedures, while nine (60%) of 15 distal esophageal coins passed into the stomach spontaneously (P < .001). Five children (7%) were asymptomatic.
Conclusions:
Proximal and middle esophageal coins should be promptly removed, as per present practice. Children with distal esophageal coins should be observed up to 24 hours before an invasive removal procedure, since many will spontaneously clear their coins. Since esophageal coins may be asymptomatic, all children who have swallowed coins should undergo roentgenographic evaluation.
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