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Review Article
Gastroenterology
Update on eosinophilic gastrointestinal disease beyond eosinophilic esophagitis in children
Hye Ran Yang
Clin Exp Pediatr. 2023;66(6):233-239.   Published online January 3, 2023
· Eosinophilic gastrointestinal disease (EGID) is uncommon, with a prevalence of 1–30/100,000 in the general population; however, it is increasing worldwide.
· The diagnosis of EGID is based on histopathological findings of endoscopic mucosal biopsy in which tissue eosinophils are counted in each gastrointestinal tract segment of patients with chronic or recurrent gastrointestinal symptoms.
· Individualized treatment strategies, including adequate dietary and pharmacological therapy, may help improve outcomes of children with EGID.
Editorial
Nutrition
What should we do to prevent and manage obesity in children and adolescents?
Hye Ran Yang
Clin Exp Pediatr. 2019;62(1):1-2.   Published online January 11, 2019
Guideline
Nutrition
Clinical practice guideline for the diagnosis and treatment of pediatric obesity: recommendations from the Committee on Pediatric Obesity of the Korean Society of Pediatric Gastroenterology Hepatology and Nutrition
Dae Yong Yi, Soon Chul Kim, Ji Hyuk Lee, Eun Hye Lee, Jae Young Kim, Yong Joo Kim, Ki Soo Kang, Jeana Hong, Jung Ok Shim, Yoon Lee, Ben Kang, Yeoun Joo Lee, Mi Jin Kim, Jin Soo Moon, Hong Koh, JeongAe You, Young-Sook Kwak, Hyunjung Lim, Hye Ran Yang
Clin Exp Pediatr. 2019;62(1):3-21.   Published online December 27, 2018
The Committee on Pediatric Obesity of the Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition newly developed the first Korean Guideline on the Diagnosis and Treatment of Obesity in Children and Adolescents to deliver an evidence-based systematic approach to childhood obesity in South Korea. The following areas were systematically reviewed, especially on the basis of all available references published in...
Review Article
Nutrition
How to approach feeding difficulties in young children
Hye Ran Yang
Clin Exp Pediatr. 2017;60(12):379-384.   Published online December 22, 2017

Feeding is an interaction between a child and caregiver, and feeding difficulty is an umbrella term encompassing all feeding problems, regardless of etiology, severity, or consequences, while feeding disorder refers to an inability or refusal to eat sufficient quantities or variety of food to maintain adequate nutritional status, leading to substantial consequences, including malnutrition, impaired growth, and possible neurocognitive dysfunction....

Original Article
Diencephalic syndrome: a frequently neglected cause of failure to thrive in infants
Ahlee Kim, Jin Soo Moon, Hye Ran Yang, Ju Young Chang, Jae Sung Ko, Jeong Kee Seo
Clin Exp Pediatr. 2015;58(1):28-32.   Published online January 31, 2015
Purpose

Diencephalic syndrome is an uncommon cause of failure to thrive in early childhood that is associated with central nervous system neoplasms in the hypothalamic-optic chiasmatic region. It is characterized by complex signs and symptoms related to hypothalamic dysfunction; such nonspecific clinical features may delay diagnosis of the brain tumor. In this study, we analyzed a series of cases in order...

Review Article
Noninvasive diagnosis of pediatric nonalcoholic fatty liver disease
Hye Ran Yang
Clin Exp Pediatr. 2013;56(2):45-51.   Published online February 25, 2013

Because nonalcoholic steatohepatitis can progress towards cirrhosis even in children, early detection of hepatic fibrosis and accurate diagnosis of nonalcoholic fatty liver disease (NAFLD) are important. Although liver biopsy is regarded as the gold standard of diagnosis, its clinical application is somewhat limited in children due to its invasiveness. Noninvasive diagnostic methods, including imaging studies, biomarkers of inflammation, oxidative stress,...

Original Article
Current feeding practices and maternal nutritional knowledge on complementary feeding in Korea
Hye Won Yom, Jeong Wan Seo, Hyesook Park, Kwang Hae Choi, Ju Young Chang, Eell Ryoo, Hye Ran Yang, Jae Young Kim, Ji Hyun Seo, Yong Joo Kim, Kyung Rye Moon, Ki Soo Kang, Kie Young Park, Seong Soo Lee, Jeong Ok Shim
Clin Exp Pediatr. 2009;52(10):1090-1102.   Published online October 15, 2009
Purpose : To evaluate current feeding practices and maternal nutritional knowledge on complementary feeding. Methods:Mothers of babies aged 9-15 months who visited pediatric clinics of 14 general hospitals between September and December 2008 were asked to fill questionnaires. Data from 1,078 questionnaires were analyzed. Results : Complementary food was introduced at 4-7 months in 89% of babies. Home-made rice gruel was the...
Review Article
Recent concepts on vitamin D in children and adolescents
Hye Ran Yang, Jeong Wan Seo, Yong Joo Kim, Jae Young Kim, Eell Ryoo, Jae Geon Sim, Hye Won Yom, Ju Young Chang, Ji A Jung, Kwang Hae Choi
Clin Exp Pediatr. 2009;52(10):1082-1089.   Published online October 15, 2009
Vitamin D is an important fat-soluble vitamin that functions as a prohormone and affects bone mineralization and calcium homeostasis. Vitamin D deficiency causesboth musculoskeletal manifestations, including rickets, and extra-musculoskeletal symptoms. Because vitamin D is naturally present in only some foods, intake of daily foods cannot meet the dietary reference intake for vitamin D. Sunlight is the main source of vitamin...
Original Article
Usefulness of early endoscopy for predicting the development of stricture after corrosive esophagitis in children
Ji Yong Park, Jee Youn Shin, Hye Ran Yang, Jae Sung Ko, Woo Sun Kim, Jeong Kee Seo
Clin Exp Pediatr. 2009;52(4):446-452.   Published online April 15, 2009
Purpose : This study was performed to demonstrate the usefulness of early endoscopy for predicting the development of stricture following corrosive ingestion in children. Methods : We conducted a retrospective study on 34 children who were brought to Seoul National University Childrens Hospital and Seoul National University Bundang Hospital for corrosive ingestion from 1989 to 2007. Results : The corrosive burns were...
Case Report
A case of simultaneously identified glycogen storage disease and mucopolysaccharidosis
Ju Young Lee, Jeong Ok Shim, Hye Ran Yang, Ju Young Chang, Choong Ho Shin, Jae Sung Ko, Jeong Kee Seo, Woo Sun Kim, Gyeong Hoon Kang, Jeong Han Song, Jong Won Kim
Clin Exp Pediatr. 2008;51(6):650-654.   Published online June 15, 2008
Glycogen storage disease (GSD) and mucopolysaccharidosis (MPS) are both independently inherited disorders. GSD is a member of a group of genetic disorders involving enzymes responsible for the synthesis and degradation of glycogen. GSD leads to abnormal tissue concentrations of glycogen, primarily in the liver, muscle, or both. MPS is a member of a group of inherited lysosomal storage diseases, which...
Erratum
Assessment of modifiable lifestyle factors for obese children and adolescents through questionnaires
Jeong Wan Seo, Ji A Jung, Hye Sook Park, Jae Sung Ko, Yong Joo Kim, Jae Young Kim, Eell Ryoo, Sun Hwan Bae, Jae Geon Sim, Hye Ran Yang, Byung Ho Choe, Ky Young Cho
Clin Exp Pediatr. 2008;51(6):576-583.   Published online June 15, 2008
Purpose : The identification of specific behaviors conducive to overeating or inactivity is the cornerstone of obesity management. The Committee on Nutrition of the Korean Pediatric Society developed parent and self-reporting questionnaires about eating behavior and physical activity in 2006. The aim of this study was to evaluate the usefulness of the questionnaires in assessing modifiable lifestyle factors related to...
Case Report
A case of post-operative chylous ascites after a splenorenal shunt operation in a child with congenital hepatic fibrosis
Jong Hyung Yoon, Hye Ran Yang, Jae Sung Ko, Jeong Kee Seo
Clin Exp Pediatr. 2006;49(10):1106-1110.   Published online October 15, 2006
Chylous ascites is a rare condition caused by various diseases and conditions that interfere with the abdominal or retroperitoneal lymphatics, and uncommonly it can manifest as a post-operative complication after abdominal, retroperitoneal or mediastinal surgery. Chylous ascites can be diagnosed by a high triglyceride content in ascites. The authors experienced a 5-year-old girl with congenital hepatic fibrosis who presented with...
Original Article
Intravenous immunoglobulin for severe gastrointestinal manifestation of Henoch-Sch nlein purpura refractory to corticosteroid therapy
Hye Ran Yang, Won Jung Choi, Jae Sung Ko, Jeong Kee Seo
Clin Exp Pediatr. 2006;49(7):784-789.   Published online July 15, 2006
Purpose : Henoch-Schönlein purpura(HSP) is a systemic vasculitis involving small vessels of skin, gastrointestinal(GI) tract and kidney. Digestive involvement of HSP can be serious with massive GI bleeding, perforation, and intussusception. However, some patients do not respond to conventional corticosteroid therapy. In this study, we investigated the efficacy of intravenous immunoglobulin (IVIG) for serious digestive manifestations not responding to steroid. Methods...
Jagged1 mutation analysis in Alagille syndrome patients
Jae Sung Ko, Hye Ran Yang, Kyung Mo Kim, Jeong Kee Seo
Clin Exp Pediatr. 2006;49(5):519-522.   Published online May 15, 2006
Purpose : Alagille syndrome is an autosomal dominant disorder with developmental abnormalities affecting the liver, heart, eyes, vertebrae, and craniofacial region. The Jagged1(JAG1) gene, which encodes a ligand of Notch, has been found mutated in Alagille syndrome. The aim of the study was to investigate the mutation analysis of JAG1 gene in Korean patients with Alagille syndrome. Methods : Genomic DNA...
Case Report
Gastric neurofibroma in von Recklinghausen disease : a cause of upper gastrointestinal bleeding
Bo Sang Kwon, Jeong Ok Shim, Jeong Kee Seo, Hye Ran Yang, Jae Sung Ko, Seong Eun Jung, Woo Sun Kim, Gyeong Hoon Kang
Clin Exp Pediatr. 2006;49(2):203-207.   Published online February 15, 2006
Neurofibromatosis type 1 (von Recklinghausen disease, NF1) involves the central and peripheral nervous systems as well as the skin, bone, endocrine, gastrointestinal and vascular systems. The gastrointestinal neurofibroma associated with NF1 has been infrequently reported. We report our experience with a 15-year-old boy who had a gastric plexiform neurofibroma with upper gastrointestinal bleeding and underwent a tumorectomy because of massive...
Review Article
New approach to chronic recurrent abdominal pain in children
Hye Ran Yang
Clin Exp Pediatr. 2006;49(2):129-135.   Published online February 15, 2006
Chronic recurrent abdominal pain is a common manifestation in children. Functional abdominal pain is the most common cause of chronic abdominal pain and can be diagnosed properly by the physician without the requirement of specific evaluation when there are no alarm symptoms or signs. Functional abdominal pain is categorized as functional dyspepsia, irritable bowel syndrome, functional abdominal pain, abdominal migraine,...
Case Report
Development of Crohn disease in patients with myelodysplastic syndrome : report of two children
Jeong Ok Shim, Jeong Kee Seo, Hye Ran Yang, Jae Sung Ko, Hee Young Shin, Hyo Seop Ahn, Woo Sun Kim, Gyeong Hoon Kang
Clin Exp Pediatr. 2006;49(1):107-111.   Published online January 15, 2006
Crohn disease (CD) is rare, but the incidence of CD has been increasing over the past ten years. We found two cases of CD, associated with myelodysplastic syndrome (MDS), for the first time in children. In the first patient, MDS was diagnosed at three years of age and CD developed later at eight years of age. The patient presented with...
Original Article
Clinical Findings of Genotypes in Korean Patients with Glycogen Storage Disease Type Ia
Jae Sung Ko, Hye Ran Yang, Jong Won Kim, Jeong Kee Seo
Clin Exp Pediatr. 2005;48(8):877-880.   Published online August 15, 2005
Purpose : Glycogen storage disease type Ia(GSD Ia) is an autosomal recessive disorder caused by the deficiency of glucose-6-phosphatase(G6Pase). The aim of the study was to investigate the spectrum of G6Pase gene mutations and relationship between genotype and clinical findings in Korean patients with GSD Ia. Methods : Genomic DNA was extracted from peripheral leukocytes of 20 patients with GSD...
Correlation of Body Mass Index, Body Fat Distribution, Aminotranferases and Computed Tomography in Obese Children with Fatty Liver
So Eun Park, Hye Ran Yang, Ju Young Chang, Jae Sung Ko, Jeong Kee Seo, Whal Lee, Woo Sun Kim
Clin Exp Pediatr. 2005;48(3):276-283.   Published online March 15, 2005
Purpose : Visceral fat accumulation plays a major role in metabolic complications of obesity. It is known that nonalcoholic fatty liver in obese adults is associated with visceral fat accumulation. Body mass index(BMI) is used as the index of obesity in children. The aim of this study is to evaluate the correlation of BMI and visceral adipose tissue(VAT), and the...
Case Report
A Case of Hereditary Fructose Intolerance
Eun Kyeong Kang, Hye Ran Yang, Jeong Kee Seo, Sun Hoan Bai, Joo Young Jeong, Jae Sung Ko, Il Soo Ha, Jeong Han Song, Kyeong Ae Wi, Yoon Sook Shin
Clin Exp Pediatr. 2002;45(1):120-124.   Published online January 15, 2002
Hereditary fructose intolerance(HFI) is an autosomal recessive disease caused by catalytic deficiency of aldolase B in which affected homozygotes develop hypoglycemia and abdominal symptoms after taking foods containing fructose. Chronic exposure to fructose may lead to progressive hepatic injury, renal injury, growth retardation, and ultimately to liver and kidney failure. Herein, we report a case of HFI with presentation of episodic vomiting, diarrhea, cold...
Original Article
A Study on the Disease Course and Prognosis of Cyclic Vomiting Syndrome
Hye Ran Yang, Jae Sung Ko, Jeong Kee Seo
Clin Exp Pediatr. 2001;44(10):1141-1156.   Published online October 15, 2001
Purpose : To describe clinical features of cyclic vomiting syndrome(CVS), managements during episodes, prophylactic drugs as long term therapy and to investigate the disease course and prognostic factors of CVS. Methods : Thirty two children who fulfilled the diagnostic criteria of CVS and who presented to Seoul National University Children's Hospital from March 1989 to December 2000, were included. Data were...