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Case Report
Oncology
Early onset of colorectal cancer in a 13-year-old girl with Lynch syndrome
Do Hee Ahn, Jung Hee Rho, Hann Tchah, In-Sang Jeon
Clin Exp Pediatr. 2016;59(1):40-42.   Published online January 22, 2016

Lynch syndrome is the most common inherited colon cancer syndrome. Patients with Lynch syndrome develop a range of cancers including colorectal cancer (CRC) and carry a mutation on one of the mismatched repair (MMR) genes. Although CRC usually occurs after the fourth decade in patients with Lynch syndrome harboring a heterozygous MMR gene mutation, it can occur in children with...

Original Article
Hepatitis associated with Mycoplasma pneumoniae infection in Korean children: a prospective study
Kyu Won Kim, Jae Jin Sung, Hann Tchah, Eell Ryoo, Hye Kyung Cho, Yong Han Sun, Kang Ho Cho, Dong Woo Son, In Sang Jeon, Yun Mi Kim
Clin Exp Pediatr. 2015;58(6):211-217.   Published online June 22, 2015
Purpose

Mycoplasma pneumoniae (MP) infection is a major cause of respiratory infection in school-aged children. Extrapulmonary manifestations of MP infection are common, but liver involvement has been rarely reported. The aim of this study was to determine the clinical characteristics of MP-associated hepatitis.

Methods

This prospective study included 1,044 pediatric patients with MP infection diagnosed serologically with MP IgM at one medical center...

Predictive indicators of coronary artery complications in Kawasaki disease
Min Jee Park, In-sang Jeon, Hann Tchah, Kang Ho Cho, Mi-Jin Jung, Deok Young Choi
Clin Exp Pediatr. 2009;52(10):1161-1166.   Published online October 15, 2009
Purpose : Kawasaki disease—the most common cause of acquired heart disease in children—incidence is increasing yearly. Therefore, we evaluated the predictive indicators of coronary complications of Kawasaki disease based on clinical and laboratory data. Methods : Between January 2005 and March 2008, of the 201 children with Kawasaki disease treated at the Gil Hospital of Gachon University of Medicine and...
Hepatitis Complicated with Mycoplasma pneumoniae Infection in Children
Seung Min Lee, Sung Moon Lee, Hann Tchah, In Sang Jeon, Eell Ryoo, Kang Ho Cho, Yong Han Seon, Dong Woo Son, Hee Joo Hong
Clin Exp Pediatr. 2005;48(8):832-838.   Published online August 15, 2005
Purpose : Mycoplasma pneumoniae infection is relatively common in childhood. Its extrapulmonary manifestations have been reported so much, but hepatitis associated with it has been reported rarely in Korea. Methods : A clinical study was performed on 556 patients of M. pneumoniae pneumonia diagnosed serologically at Gil hospital from January 2001 to December 2004. We reviewed 65 cases among these patients,...
Clinical Lecture
Recurrent Abdominal Pain
Hann Tchah
Clin Exp Pediatr. 2003;46(5):434-439.   Published online May 15, 2003
Original Article
Colon Perforation during Air Enema Reduction of Intussusception
Yong Kuk Kim, Hae Ra Im, Gwang Hoon Lee, Soo Jin Han, Yong Han Sun, Eell Ryoo, Kang Ho Cho, Hann Tchah, Hak Soo Lee
Clin Exp Pediatr. 2003;46(1):37-41.   Published online January 15, 2003
Purpose : Although air enema reduction has been known as a good method of diagnosis and treatment of intussusception, it could develop colon perforation. However, there have been few studies about this complication. So we analyzed the risk factors of colon perforation during air enema reduction in patients with intussusception. Methods : We reviewed the charts of 12 colon perforation patients...
Clinical and Endoscopic Findings in Children with Duodenal Ulcer due to Helicobacter pylori Infection
Hwa Jung Kim, Hae Jeong Han, Sang Gil An, Ji Sook Yoo, Hee Sup Kim, Hann Tchah, Ho Jin Park, Mi Kyoung Shin
Clin Exp Pediatr. 1999;42(1):69-76.   Published online January 15, 1999
Purpose : Recently, a wide application of gastrofiberoscopy in pediatrics has revealed that the incidence of peptic ulcer has increased in the past years, and various results were reported about the relationship between duodenal ulcer and H. pylori. The aim of this retrospective study is to investigate the role of H. pylori in duodenal ulcers in children and to help diagnose and treat duodenal...
Endoscopic Removal of Foreign Bodies in Upper GI Tract in Children
Hae Jung Han, Sang Gil An, Yong Min Chung, Hee Sup Kim, Hann Tchah, Ho Jin Park
Clin Exp Pediatr. 1997;40(11):1552-1558.   Published online November 15, 1997
Purpose : The foreing bodies in the upper GI tract are chiefly caused by accidental swallowing and rarely provoke symptoms. It is recommended to remove the foreign bodies if they produce symptoms or remain in GI tract for long duration or complications are expected to bring about. Nowadays the development of pediatric therapeutic endoscopy enables the removal of the foreign bodies in upper GI tract...
Measles Hepatitis in Children
Sang Gil An, Ji Eun Wuon, Ki Moon Cha, Yong Min Chung, Hee Sup Kim, Hann Tchah, Ho Jin Park
Clin Exp Pediatr. 1996;39(10):1371-1377.   Published online October 15, 1996
Purpose : Measlesinfection in children hasbeen known to havemany complications including hepatitis. But there has been no appropriate study about measles hepatitis in children. So we studied to facilitate the understanding of measles hepatitis in children by analyzing their clinical features and laboratory findings. Methods : We investigated 164 patients who were admitted to the Department of Pediatrics, Seoul Red Cross Hospital due to measles...
Prospective, Controlled Trial with Dipheny1-dimethy1-dicarboxylate in Children with Chronic Liver Diseses : The Effect on Lowering Serum Aminotransferase Levels
Ji Eun Wunon, Sang Gil An, Ki Moon Cha, Yong Min Chung, Hee Sup Kim, Hann Tchah, Ho Jin Park
Clin Exp Pediatr. 1995;38(10):1378-1383.   Published online October 15, 1995
Purpose : The prospective cotrolled study was performed to identify the effect of the dipheny1-dimethy1-dicarboxylate(PMC) on lowering serum transaminases in children with chronic liver diseases. Methods : The twenty patients were paticipated in this study who were followed up in the Department of Pediatrics of the Seoul Red Cross Hospital because of the elevated levels of serum alaine aminotransferase(ALT) and aspartate...
Clinical and Histologic Findings and their Correlations in Children with Nodular Gastritis
Ki Moon Cha, Gi Euin Won, Hann Tchah, Ho Jin Park, Mi Kyoung Shin
Clin Exp Pediatr. 1995;38(8):1069-1076.   Published online August 15, 1995
Purpose : Recently, a wide application of gastrofiberscopy in the pediatric group have revealed that nodular gastritis is an unique disease in children and associated with Helicobacter pylori. The aim of this prospective study was to investigate the clinical and histologic features in children with nodular gastritis, and to assess corelation between both. Methods : During a period of 44 months(May 1991-December...
The Gastrofiberscopic Findings in Pediatric Patients
Yong Min Chung, Hwa Ja Kim, Hann Tchah, Sang Kyu Park, Ho Jin Park
Clin Exp Pediatr. 1993;36(6):837-841.   Published online June 15, 1993
We observed 240 cases ranging in age from 3 months to 15 years seen by gastrofiberoscopy in the department of pediatrics of Seoul Red Cross Hospital from March 1990 to October 1992 and following results were obtained. 1) The male to female ratios in total cases and 89 patients complaining of abdominal pain for more than one month were 0.94:1 and...
Studies on Arrhythmias in School Children.
Young Hwue Kim, Hann Tchah, Ki Soo Kim, Chung Il Noh, Jung Yun Choi, Young Soo Yun, Chang Yee Hong
Clin Exp Pediatr. 1989;32(8):1093-1097.   Published online August 31, 1989
To determine the incidence of cardiac arrhythmias of the school children, we have performed heart screening by the questionare and EKG and physical examination from September 1984 to October 1987 in Seoul. 1) The incidence of the cardiac arrhythmias was 1.27%. 2) There were 449 cases of heart diseases detected. Among these heart diseases there were congeni- tal heart diseases in 82 cases (0.31%), acquired heart diseases...
Utilization Patterns of Pediatric Emergency Room.
Hann Tchah, Dork Ro Yun
Clin Exp Pediatr. 1989;32(7):897-914.   Published online July 31, 1989
The utilization of pediatric emergency services has increased rapidly in recent years with general recognition of its funtion. The authors reviewed 11,089 patients visiting emergency room of Seoul National University Children’s Hospital during last two years from Jan. 1st 1986 to Dec. 31st 1987. The findings obtained were as follows: 1) There were 5,110 visits in 1986 and 5,979 visits in 1987. First visit was...
Clinical Application of Shake test od Gastric Aspiretes for the Prediction od Respiratory Distress Syndrome in the Newborn infants.
In Sang Jeon, Hann Tchah, Myoung Jae Choi, Beyng Il Kim, Jung Hwan Choi, Chong Ku Yun
Clin Exp Pediatr. 1989;32(3):349-358.   Published online March 31, 1989
To study the predictive value of gastric aspirates shake test on respiratory distress syndrome (RDS) in the newborn infants, we carried out the shake test on gastric aspirates of all newborn who admitted to NICU of Seoul National University Hospital from July 1986 to December 1987. We successfully carried out gastric aspirates shake test on 96 newborn infants and analyzed the relation between gastric...