Foreign Body Ingestion in Children: A Narrative Review of Time-Critical Risk Stratification and Contemporary...

Foreign body ingestion is a frequent gastrointestinal emergency in children. Although most ingested objects pass spontaneously, button batteries, multiple high-powered magnets, sharp objects, and superabsorbent polymers may cause rapid and severe complications. Recent reviews have often focused on individual categories of high-risk objects, whereas practical integration of time-critical diagnosis, comparative guideline recommendations, radiolucent objects, vulnerable pediatric populations, and prognostic risk factors remains limited. This narrative review aims to critically synthesized current evidence and to propose a clinically oriented, risk-stratified framework that distinguishes emergent, urgent, and observational management pathways according to object characteristics, anatomical location, symptoms, elapsed time, imaging findings, and patient-related factors.

A structured narrative review was performed using PubMed/MEDLINE, Scopus and Web of Science. The final searches were performed in July 2026 and covered publications indexed from January 2000 to June 2026. The review included international guidelines, position papers, systematic reviews, meta-analyses and clinically relevant observational studies in patients up to 18 years of age with gastrointestinal foreign body ingestion. Exclusion criteria were studies only involving adults, foreign body aspiration, nasal or auricular insertion, ingestion of caustic substances, duplicate publications, isolated case reports with no broader clinical relevance and articles not available in full text. Evidence was synthesized according to object type, anatomical location, urgency of intervention, imaging strategy, prognostic factors, and patient-related risk.

Most ingested foreign bodies pass spontaneously; however, button batteries, multiple magnets, sharp objects, and superabsorbent polymers are associated with distinct mechanisms of injury and a disproportionate risk of severe complications. Time to intervention, object type and size, anatomical location, symptom severity, delayed presentation, and imaging evidence of complications consistently emerge as the principal determinants of outcome. Current international recommendations show broad agreement for immediate removal of esophageal button batteries and sharp objects causing obstruction, but important differences remain regarding gastric batteries, distal magnets, radiolucent objects, and selected asymptomatic patients. Evidence for predictive models is still limited, and most proposed risk factors have not undergone external validation. Vulnerable children (e.g., with neurodevelopmental disorders, pica or recurrent intentional ingestion) require individualized multidisciplinary assessment and follow-up.

Pediatric foreign body ingestion should be approached in a time-critical and risk-stratified manner, combining object characteristics, anatomical location, presenting symptoms, time from ingestion, imaging findings, and patient-specific vulnerability. Differentiated triage for emergent intervention, urgent removal and structured observation may improve clinical triage and reduce delays for high-risk cases. Current guidelines offer a robust management framework, but there are significant evidence gaps relating to radiolucent objects, water beads, distal magnets and externally validated predictive models. More multicenter studies are required to support standardized prognostic tools and more consistent decision-making across pediatric emergency settings.