S1119 Safety and Efficacy of Pediatric Endosonography: A Multi-Center Retrospective Cohort Study

Abstract

Introduction: Endoscopic ultrasound (EUS) is widely used in the adult population for a wide range of diagnostic and therapeutic purposes. In the pediatric population, the use of EUS has been historically diagnostic, however, EUS-guided therapy is increasing. In this retrospective study, we aim to describe the safety and efficacy profiles of EUS in pediatric patients across a spectrum of EUS procedures. Methods: This is a retrospective multi-center cohort study of pediatric patients who underwent EUS procedures for diagnostic or therapeutic purposes between January 2011 and March 2022. Data including demographics, procedural details, and adverse events (AE) were collected. Outcomes were diagnostic success, defined as successful diagnosis using only EUS without any additional diagnostic tools, and therapeutic success, defined as using only EUS without additional therapeutic interventions. Results: 61 pediatric patients between the age of 0 to 18 years underwent 77 EUS procedures, of which 35 were females (56.5%). The mean age at the procedure was 16.2 ± 4.2 years and the median weight was 70.2 kg (IQR 49.7-91.2). The indications for EUS were gastrointestinal lumen evaluation ± fine needle biopsy/aspiration (FNB/A), pancreaticobiliary tree evaluation ±FNB/A, surveillance for tumor syndrome, suspected lymph node (LN), or gastrointestinal (GI) mass, celiac plexus block and cyst gastrostomy creation (Table). The median procedure time was 35 minutes (IQR 18 – 49). The diagnostic success rate was 98.7% and the therapeutic success rate was 100%. The complication rate was 2.6% which included 2 cases of pancreatitis after fine-needle aspiration of the pancreas. No case had any anesthesia-related complications. Conclusion: In this multicenter retrospective cohort study, the use of EUS in pediatrics has shown to be safe and effective in a wide range of diagnostic and therapeutic intents. Table 1. - Baseline characteristics, procedural and clinical outcomes of pediatric patient EUS procedures N=77 (%) Females 35 (56.5) Weight (n=66) 70.2 [49.7 – 91.2] Age at procedure (years) 16.2 ± 4.2 Indication Diagnostic GI lumen Evaluation 9 (11.7) GI lumen Evaluation with FNB/A 5 (6.5) Pancreaticobiliary tree evaluation 37 (48.1) Pancreaticobiliary tree evaluation with FNB/A 6 (7.8) Surveillance for tumor syndrome 7 (9.1) Suspected LN or mass 8 (10.4) Therapeutic Celiac Plexus Block 1 (1.3) Cystgastrostomy 4 (5.2) Anesthesia Type Monitored Anesthesia Care (MAC) 48 (62.3) General Anesthesia 29 (37.7) Mean procedure Time in minutes (N= 59) 35.0 [18.0 - 49.0] Diagnostic Success 76 (98.7) Therapeutic Success (n=5) 5 (100) EUS related complications 2 (2.6) Anesthesia complications 0 (0) EUS = endoscopic ultrasound, FNA/B = fine needle aspiration/biopsy, LN = lymph node.Continuous variables presented as mean ± SD or median (IQR).Categorical variables presented as n (%).