Pediatric Reports

Background and Clinical Significance: Urticaria in children is generally self-limiting, and infections are a significant trigger. While anti-IgE therapy (Omalizumab) is approved for chronic spontaneous urticaria (CSU) in adolescents and adults, its role in treating acute urticaria, particularly in children, is not well defined. Case Presentation: We present two pediatric cases of acute urticaria associated with Mycoplasma pneumoniae infection. Both cases were refractory to antihistamines and corticosteroids but showed rapid response with anti-IgE treatment. Conclusions: This is the first case report in the literature of pediatric acute urticaria treated with Omalizumab. These cases suggest a potential role for IgE-mediated pathways in acute urticaria related to Mycoplasma infection and raise the question of broader applications for Omalizumab beyond CSU.

Objectives: Global Developmental Delay (GDD) and Intellectual Disability (ID) are prevalent neurodevelopmental disorders with significant disability burden, and genetic factors play a crucial role in their etiology. This study aimed to develop and validate a clinical prediction model for identifying children with GDD/ID at high genetic risk, facilitating targeted genetic testing. Methods: We retrospectively analyzed clinical data of children with GDD/ID treated at Nanjing Children’s Hospital from January 2019 to December 2023. Children with comorbid Autism Spectrum Disorder (ASD) were excluded. The dataset was randomly split into training and validation sets (7:3 ratio). Lasso regression was used to identify potential predictive factors for positive genetic test results, followed by multivariable logistic regression to select independent predictors, which were incorporated into a nomogram. Model performance was evaluated by discrimination, calibration, and clinical utility using decision curve analysis in both sets. Results: Four independent predictors—craniofacial abnormalities, visceral abnormalities, physical growth abnormalities, and family history of ID—were identified. The resulting nomogram demonstrated an area under the curve (AUC) of 0.734., with good calibration and positive net benefit on decision curve analysis. Validation confirmed the reliability of the model. Conclusions: We developed a clinically applicable prediction model to identify high genetic risk among children with GDD/ID without ASD. This model may serve as a preliminary screening tool to assist clinicians in prioritizing genetic testing and improving diagnostic efficiency in clinical practice.

Background: Open access endoscopy (OAE) allows outpatient endoscopic procedures without prior consultation with the endoscopist, a practice common in adult gastroenterology but not part of pediatric gastroenterology practice. Here we evaluate the feasibility and safety of a newly implemented pediatric OAE program. Methods: We identified patients aged 18 and under who underwent OAE in the first year of our program using a prospectively maintained endoscopy database. The program involved three experienced endoscopists and included demographics, indications, interventions, and adverse events. Patients/parents received follow-up calls on day 1 and day 7 to detect adverse events and assess perceptions of the OAE process. Results: A total of 54 outpatient OAE procedures were performed, with a median patient age of 10 years (range 18 months–18 years). This included 33 esophagogastroduodenoscopies (EGDs) and 16 colonoscopies, all with biopsies. ERCPs were performed for stone management (4) and stricture evaluation/stent exchange (1). All procedures were successful with no adverse events reported, and patient/parent feedback indicated that the OAE approach was beneficial in terms of lifestyle, socioeconomic, and psychological aspects. Some challenges were identified through follow-up discussions. Conclusions: Our early experience suggests that pediatric OAE is feasible and appeared safe within this small pilot cohort, with no adverse events observed. Advantages of pediatric OAE include minimizing missed school days and reducing medical anxiety. Feedback has led to refinements in practice at our institution, and further study on OAE is warranted at the endoscopy society level. Larger studies are needed to determine safety, effectiveness, and generalizability.