• Murat Cakir, Elif Sag, Ismail Saygin, and Fazil Orhan.
• Department of Pediatric Gastroenterology Hepatology and Nutrition, Karadeniz Technical University, Faculty of Medicine, Trabzon, Turkey, muratcak@hotmail.com.
• Med Princ Pract. 2020 Jan 1; 29 (5): 473-479.

ObjectiveWe aimed to share our observations on the demographics, clinical characteristics, and outcomes of lymphonodular hyperplasia (LNH) in children.Subjects And MethodsThe study included children on whom colonoscopy was performed between January 2015 and May 2018 (n = 361). Demographics, treatment modalities, and outcomes of the patients with LNH were recorded.ResultsLNH was found in 66 patients (18.3%; mean age 8.6 ± 5.96 years, 59.1% male). We found that the etiologic factors were food hypersensitivity (FH) in 25 (37.8%), nonspecific colitis in 12 (18.2%), irritable bowel syndrome in 10 (15.2%), familial Mediter-ranean fever in 7 (10.6%), primary immunodeficiency in 4 (6.1%), and intestinal dysmotility, oxyuriasis, Crohn's disease, and giardiasis in 1 (1.5%) patient. Additionally, in the genetic analysis of patients with idiopathic LNH (n = 4), we detected heterozygote MEFV mutations in all. Cow's milk and egg (25%) were the most common allergens in patients with FH. Symptoms of all patients (n = 25) improved after an elimination diet.ConclusionsLNH is a common finding in pediatric colonoscopies with a variety of etiologies ranging from FH and familial Mediterranean fever to immunodeficiency.© 2020 The Author(s) Published by S. Karger AG, Basel.

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