Pediatric endoscopic mucosal resection: A 10-year single-center experience.

Endoscopic mucosal resection (EMR) is well established in adult gastroenterology but remains underutilized in pediatrics due to limited data, training opportunities, and equipment. This study presents a 10-year, single-center experience with conventional hot and cold snare EMR, band-assisted (B-EMR), and underwater EMR (U-EMR) techniques in pediatric patients. A retrospective review was conducted of all EMR procedures performed in patients under 21 years of age between 2015 and 2025 at a tertiary care children's hospital. Data on patient demographics, lesion characteristics, procedural details, pathology, and outcomes were collected and analyzed descriptively. Twenty EMRs were performed in 18 patients (mean age 17.1 years, range 3-20). The most common underlying diagnoses included familial adenomatous polyposis (n = 7), sporadic mucosal polyps (n = 4), subepithelial lesions (n = 4), juvenile polyposis syndrome (n = 2), Peutz-Jeghers syndrome (n = 1), and Lynch syndrome (n = 1). Lesions ranged from 6 to 80 mm and were located throughout the gastrointestinal tract, most commonly in the colon (n = 9), duodenum (n = 5), and esophagus (n = 3). Techniques included hot snare EMR (n = 9), cold snare EMR (n = 6), B-EMR (n = 4), and U-EMR (n = 1). Complete resection was achieved in 95% of cases, with one incomplete resection requiring surgical management for adenocarcinoma. B-EMR was safely applied to subepithelial lesions. No delayed complications occurred. EMR is feasible, safe, and effective in pediatric patients for both mucosal and subepithelial lesions. Broader adoption in pediatric practice will require expanded training, multidisciplinary collaboration, and development of pediatric-specific guidelines. These findings support EMR as a valuable therapeutic option in complex pediatric gastrointestinal disease.