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"Jung-Tak Oh"

Original Articles

[English]
Neuroblastoma: A 2020 Survey Conducted by the Korean Association of Pediatric Surgeons
Hee-Beom Yang, Soo Min Ahn, Min Jeng Cho, Yong-Hoon Cho, Soo Jin Na Choi, Yoon Mi Choi, Jae Hee Chung, Seok Joo Han, In Geol Ho, Jeong Hong, Kyong Ihn, Yeon Jun Jeong, Eunyoung Jung, Dae Youn Kim, Hae-Young Kim, Ki Hoon Kim, Seong Chul Kim, Soo-Hong Kim, Eun-Jung Koo, Hyun Hee Kwon, Yong Jae Kwon, Nam-Hyuk Lee, Ju Yeon Lee, Sanghoon Lee, Jung-Man Namgoong, Chaeyoun Oh, Jung-Tak Oh, Jin Young Park, Junbeom Park, Jeong-Meen Seo, Jae Ho Shin, Hyun Beak Shin, Joohyun Sim, Jiyoung Sul, Joon Kee Youn, Hyun-Young Kim
Adv Pediatr Surg 2025;31(2):66-76.   Published online November 25, 2025
DOI: https://doi.org/10.13029/aps.2025.31.2.66
Purpose
To report a nationwide survey on neuroblastoma conducted by the Korean Association of Pediatric Surgeons (KAPS) in 2020.
Methods
The clinical data of pediatric patients diagnosed with and treated for neuroblastoma from 2005 to 2019 in 19 hospitals of KAPS members were collected. Survival and prognostic factor analyses were performed using the log rank test and Cox proportional hazard analysis. A p-value <0.05 was considered significant.
Results
A total of 669 patients with neuroblastoma were registered for the study. The results were presented and discussed at the 36th annual meeting of the KAPS, which was held in Seoul on August 21, 2020.
Conclusion
This study provides information on patient demographics, prognostic outcomes, and comprehensive treatment outcomes for neuroblastoma. The study is expected to be an important reference for improving pediatric surgeons’ understanding and treatment of neuroblastoma.
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[English]
A Comparative Study of Three National Surveys on Biliary Atresia by the Korean Association of Pediatric Surgeons
Yeon Jun Jeong, Dayoung Ko, Hyunhee Kwon, Ki Hoon Kim, Dae Yeon Kim, Soo-Hong Kim, Wontae Kim, Hae-Young Kim, Hyun Young Kim, Seong Chul Kim, Younghyun Na, Jung-Man Namgoong, So Hyun Nam, Junbeom Park, Jinyoung Park, Tae-Jun Park, Jeong-Meen Seo, Ji-Young Sul, Joonhyuk Son, Hyun Beak Shin, Joohyun Sim, Soo Min Ahn, Hee Beom Yang, Jung-Tak Oh, Chaeyoun Oh, Joong Kee Youn, Sanghoon Lee, Ju Yeon Lee, Kyong Ihn, Hye Kyung Chang, Eunyoung Jung, Jae Hee Chung, Yu Jeong Cho, Yun Mee Choe, Soo Jin Na Choi, Seok Joo Han, In Geol Ho, Ji-Won Han
Adv Pediatr Surg 2025;31(2):47-58.   Published online July 16, 2025
DOI: https://doi.org/10.13029/aps.2025.31.2.47
Purpose
Biliary atresia (BA) is a rare but progressive cholangiopathy and the leading cause of pediatric liver transplantation worldwide. The Korean Association of Pediatric Surgeons (KAPS) has conducted three national surveys (2001, 2011, and 2023) to assess long-term trends in the diagnosis, treatment, and outcomes of BA. This study provides a comparative analysis of the 2nd and 3rd national surveys, with reference to selected findings from the 1st survey.
Methods
This study included 453 patients from the 3rd national survey (2011–2021) and 435 patients from the 2nd survey (2001–2010), all of whom underwent Kasai portoenterostomy. Data were collected via electronic case report forms from pediatric surgical centers nationwide. Comparisons were made regarding demographics, clinical features, diagnostic patterns, operative details, follow-up outcomes, and survival. Kaplan–Meier analysis was used to evaluate long-term survival.
Results
The mean number of BA patients per year remained stable between surveys (43.5 in the 2nd, 41.18 in the 3rd), though centralization of care increased, with 61.5% of cases managed by two major institutions in the 3rd survey. The median age at surgery decreased, and the use of preoperative imaging (especially magnetic resonance cholangiopancreatography) increased. The 10-year native liver survival rate declined from 59.8% to 53.7%, while overall 10-year survival improved slightly (92.9% to 93.2%). Postoperative complications, such as cholangitis and liver failure, persisted but were better categorized. The 3rd survey also reported improved mortality (4.9%) and reduced follow-up loss (11.5%) compared to the 2nd survey.
Conclusion
While overall survival after Kasai operation has remained high and even improved, native liver survival has slightly declined. The findings reflect earlier diagnosis, more consistent diagnostic imaging, and increasing centralization of care. These trends underscore the importance of long-term nationwide data collection in guiding future strategies for BA management in Korea.
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Case Report

[English]
A Case of Proliferative Myositis in a Neonate
Hee Jin Yeon, Jun Yong Kim, Mi-Jung Lee, Jung-Tak Oh
Adv Pediatr Surg 2025;31(1):36-40.   Published online June 16, 2025
DOI: https://doi.org/10.13029/aps.2025.31.1.36
Proliferative myositis (PM) is a rare benign soft tissue neoplasm with a distinctive pseudosarcomatous proliferative reaction of muscles in tumors. Its rapid growth and bizarre microscopic appearance often require a differential diagnosis from a sarcomatous lesion. It has been reported occasionally, mostly as case reports in adult patients. Herein, we present a neonatal case of PM. To the best of our knowledge, this is the first report in the neonatal period.
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Original Articles

[English]
Comparative Analysis of National Surveys of Intestinal Atresia: A Retrospective Study by the Korean Association of Pediatric Surgeons
Jinyoung Park, Dayoung Ko, Eun-jung Koo, Hyunhee Kwon, Ki Hoon Kim, Dae Yeon Kim, Seong Chul Kim, Soo-Hong Kim, Wontae Kim, HaeYoung Kim, Hyun-Young Kim, So Hyun Nam, Jung-Man Namgoong, Junbeom Park, Taejin Park, Min-Jung Bang, Jeong-Meen Seo, Ji-Young Sul, Joonhyuk Son, Joohyun Sim, Soo Min Ahn, Hee-Beom Yang, Jung-Tak Oh, Chaeyoun Oh, Joong Kee Youn, Sanghoon Lee, Ju Yeon Lee, Kyong Ihn, Hye Kyung Chang, Yeon Jun Jeong, Eunyoung Jung, Jae Hee Chung, Min Jeong Cho, Yun-Mee Choe, Seok Joo Han, In Geol Ho, Jeong Hong
Adv Pediatr Surg 2025;31(1):8-15.   Published online May 28, 2025
DOI: https://doi.org/10.13029/aps.2025.31.1.8
Purpose
This study aims to investigate and compare the incidence, demographic characteristics, clinical manifestations, preoperative diagnostic methods, anatomical classifications, associated anomalies, operative treatments, and postoperative outcomes of patients with intestinal atresia treated by the members of the Korean Association of Pediatric Surgeons (KAPS) through three nationwide surveys.
Methods
KAPS conducted 3 national surveys in 1998, 2010, and 2024 to examine the patients diagnosed with intestinal atresia. In preparation for the survey, we developed a customized case registration form to obtain data on patient sex, birth weight, gestational age, clinical manifestations, preoperative diagnostic methods, anatomical types, associated anomalies, operative treatments, and postoperative outcomes. Authorized KAPS members completed the case registration form.
Results
The first, second, and third national surveys included 218, 222, and 236 individuals diagnosed with intestinal atresia, respectively. The male-to-female ratios were 1.5:1, 1.1:1, and 1.1:1, respectively. The first, second, and third national surveys revealed that 34.3%, 43.3%, and 53.4% of patients were born before 37 weeks of gestation, respectively. Additionally, 28.7%, 32.0%, and 40.7% of patients had a birth weight under 2,500 g. In the third national survey, duodenoduodenostomy was the most common procedure, performed in 70 out of 82 patients diagnosed with duodenal atresia. Resection and anastomosis were the main surgical procedures conducted in 47 out of 54 cases of jejunal atresia and 74 out of 92 cases of ileal atresia. The mortality rates in the first, second, and third national surveys were 13.8%, 3.6%, and 1.3% respectively, with the lowest rate observed in the third national survey.
Conclusion
These national surveys offer valuable insights into the current state of intestinal atresia, including specific surgical interventions and postoperative outcomes in South Korea. For pediatric surgeons aiming to enhance their understanding of intestinal atresia and its treatment options, these surveys could be an indispensable resource and guide.
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[English]
National Survey of Gastroschisis and Omphalocele by Korean Association of Pediatric Surgeons
Yeon Jun Jeong, Dayoung Ko, Eun-Jung Koo, Hyunhee Kwon, Dae Yeon Kim, Soo-Hong Kim, Wontae Kim, Hae-Young Kim, Hyun Young Kim, Seong Chul Kim, Younghyun Na, Jung-Man Namgoong, So Hyun Nam, Sungjoo Park, Junbeom Park, Jinyoung Park, Tae-Jun Park, Jeong-Meen Seo, Ji-Young Sul, Joonhyuk Son, Hyun Beak Shin, Joohyun Sim, Jung-Tak Oh, Chaeyoun Oh, Joong Kee Youn, Sanghoon Lee, Ju Yeon Lee, Cheolgu Lee, Kyong Ihn, Eunyoung Jung, Jae Hee Chung, Yong-Hoon Cho, Yun Mee Choe, Soo Jin Na Choi, Seok Joo Han, In Geol Ho
Adv Pediatr Surg 2024;30(2):39-51.   Published online December 13, 2024
DOI: https://doi.org/10.13029/aps.2024.30.2.39
Purpose
This study provides insights into the prevalence at birth, clinical characteristics, and outcomes of gastroschisis and omphalocele in Korea over the past decade, addressing the lack of localized data despite advanced healthcare capabilities.
Methods
The study retrospectively analyzed data from 20 pediatric surgical centers in Korea from January 2012 to December 2021, including 269 patients diagnosed with gastroschisis or omphalocele. Data variables included gender, gestational age, birth weight, associated anomalies, type of defect, surgical interventions, and outcomes.
Results
The study covered 269 patients, with 80 gastroschisis and 189 omphalocele cases. Gastroschisis prevalence at birth remained stable at 2.15 per 100,000 live births, while omphalocele increased to 5.08 per 100,000. Both conditions had similar gender ratios (0.95). Gastroschisis patients had lower birth weights (2,463.90±505.50 g) and smaller head circumferences (31.97±1.86 cm) compared to omphalocele patients (2,757.65±761.24 g, 32.78±2.64 cm). Omphalocele cases had more associated anomalies, especially cardiovascular issues. Prenatal diagnosis rates were high: 93.7% for gastroschisis and 86.4% for omphalocele. About 96.3% of gastroschisis and 84.1% of omphalocele patients were born in their treatment hospitals. Gastroschisis patients underwent surgery sooner (average 3.5 days) and started feeding later (16.5 days) than omphalocele patients (average 56.5 days to surgery, 6.6 days to start feeding). Hospital stays and follow-up durations were similar, averaging around 782.6 days for gastroschisis and 800.3 days for omphalocele patients. Survival rates were 89.7% for gastroschisis and 87.1% for omphalocele.
Conclusion
The study highlights the need for early diagnosis, centralized care, and specialized surgical approaches to optimize outcomes for gastroschisis and omphalocele patients in Korea. Enhanced prenatal screening and surgical protocols are recommended to improve these patients' prognosis.
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[English]
Comparative Analysis of Two National Surveys on Esophageal Atresia With or Without Tracheoesophageal Fistula: A Retrospective Study by the Korean Association of Pediatric Surgeons
Jinyoung Park, Dae Yeon Kim, Seong Chul Kim, Hyun-Young Kim, So Hyun Nam, Jeong-Meen Seo, Jung-Tak Oh, Myung-Duk Lee, Suk-Koo Lee, Soo Min Ahn, Hye Kyung Chang, Sung Eun Jung, Yeon Jun Jeong, Eunyoung Jung, Jae Hee Chung, Yong Hoon Cho, Soon Ok Choi, Seung Hoon Choi, Yun Mee Choe, Seok Joo Han, Jeong Hong, Nam-Hyuk Lee
Adv Pediatr Surg 2024;30(1):1-8.   Published online May 31, 2024
DOI: https://doi.org/10.13029/aps.2024.30.1.1
Purpose
The Korean Association of Pediatric Surgeons (KAPS) conducts annual nationwide surveys on various aspects of pediatric surgical diseases, with the results being discussed during KAPS’s annual spring meetings.
Methods
KAPS conducted two national surveys, in 1995 and 2016, to investigate esophageal atresia (EA) with or without tracheoesophageal fistula (TEF). The authors analyzed data from these surveys to identify differences or changes in the annual occurrence, demographic characteristics, clinical presentation, preoperative diagnostic methods, anatomical type, associated anomalies, surgical treatment, and postoperative outcomes among patients with EA/TEF treated by KAPS members.
Results
The first and second national surveys included 148 and 211 patients with EA/TEF, respectively. Excessive salivation was the most prevalent clinical symptom in both surveys. Type C was the most common form of EA/TEF in both surveys. The first survey included 126 patients, all of whom underwent open surgery. In the second survey, 152 (78.4%) of 194 patients underwent open surgery, while 34 (17.5%) underwent thoracoscopic surgery. Primary esophageal repair was performed on 96 (76.2%) of 126 patients in the first survey and on 160 (82.5%) of 194 patients in the second survey. Anastomotic strictures developed in 21.4% and 32.5% of patients, anastomotic leakage in 22.2% and 10.3%, recurrent fistula in 2.4% and 4.2% during the first and second surveys, respectively. The respective survival rates for group A were 90.2% and 98.3% in the first and second surveys. For group B, the rates were 73.9% and 98.1%, and for group C, they were 34.5% and 68.1%, respectively, according to the Waterston classifications.
Conclusion
These nationwide surveys provide comprehensive information on the status, detailed treatment, and outcomes for Korean pediatric patients with EA/TEF. They are anticipated to be an invaluable resource and guide for pediatric surgeons seeking to expand their knowledge on EA/TEF and its treatment options.
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[English]
Sacrococcygeal Teratoma: A Survey by the Korean Association of Pediatric Surgeons in 2018
Jung-Tak Oh, Hye Kyung Chang, Min Jeong Cho, Yong Hoon Cho, Soo Jin Na Choi, Yoon Mi Choi, Jae Hee Chung, Sang Young Chung, Jeong Hong, Seok Joo Han, Yeon Jun Jeong, Eunyoung Jung, Kyuhwan Jung, Dae Youn Kim, Hae-Young Kim, Hyun-Young Kim, Ki Hoon Kim, Sang Youn Kim, Seong Chul Kim, Seong Min Kim, Soo-Hong Kim, Jong-In Lee, Myung-Duk Lee, Nam-Hyuk Lee, Suk-Koo Lee, So Hyun Nam, Jin Young Park, Kwi-Won Park, Tae-Jin Park, Jeong-Meen Seo, Jae Ho Shin, Jiyoung Sul
Adv Pediatr Surg 2019;25(2):35-43.   Published online December 18, 2019
DOI: https://doi.org/10.13029/aps.2019.25.2.35
Purpose

The Korean Association of Pediatric Surgeons (KAPS) performed a nationwide survey on sacrococcygeal teratoma in 2018.

Methods

The authors reviewed and analyzed the clinical data of patients who had been treated for sacrococcygeal teratoma by KAPS members from 2008 to 2017.

Results

A total of 189 patients from 18 institutes were registered for the study, which was the first national survey of this disease dealing with a large number of patients in Korea. The results were discussed at the 34th annual meeting of KAPS, which was held in Jeonju on June 21–22, 2018.

Conclusions

We believe that this study could be utilized as a guideline for the treatment of sacrococcygeal teratoma to diminish pediatric surgeons' difficulties in treating this disease and thus lead to better outcomes.

Citations

Citations to this article as recorded by  
  • Analysis of Pediatric Surgery Using the National Healthcare Insurance Service Database in Korea: How Many Pediatric Surgeons Do We Need in Korea?
    Chaeyoun Oh, Sanghoon Lee, Hye Kyung Chang, Soo Min Ahn, Kyunghee Chae, Sujeong Kim, Sukil Kim, Jeong-Meen Seo
    Journal of Korean Medical Science.2021;[Epub]     CrossRef
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  • 1 Crossref
[English]
Santulli Enterostomy: A Considerable Method for Patients Who Require Proximal Enterostomy
Kyong Ihn, Eun-Jung Koo, In Geol Ho, Seok Joo Han, Jung-Tak Oh
J Korean Assoc Pediatr Surg 2018;24(1):20-25.   Published online June 30, 2018
DOI: https://doi.org/10.13029/jkaps.2018.24.1.20
Purpose

Santulli enterostomy has been used for various surgical abdominal conditions that require temporary diversion of bowel during a neonatal period. The aim of this study was to report clinical outcomes of Santulli enterostomy and to evaluate its usefulness.

Methods

Between January 2000 and December 2016, 40 neonates who underwent Santulli enterostomy were enrolled; Santulli enterostomies were performed for 25 patients without previous laparotomy (primary Santulli group) and 15 patients with previous laparotomy (secondary Santulli group).

Results

Small bowel atresia is the first common indication of Santulli enterostomy (22/40, 55.0%), and luminal discrepancy between proximal and distal bowel was the most common determinant factor of Santulli enterostomy (17/40, 42.5%). The median age at surgery and mean birth weight were 2 days and 2,480 g respectively in the primary group, and 71 days, 2,340 g respectively in the secondary group. Operation time was significantly longer in the secondary group than the primary group (156±48 minutes vs. 224±95 minutes, p=0.019), and there was no difference in the time taken to initiation of oral feeding between the two groups. Santulli enterostomy closure was performed at median 65 days after Santulli enterostomy for primary group and 70 days for secondary group. Six complications (15.0%) were found after Santulli enterostomy, and nine complications (24.3%) after Santulli enterostomy closure (p=0.302). The incidence of complications was significantly higher in secondary group than in primary group (4.5% vs. 53.3%, p=0.001), and the reoperation rate was also significantly higher in the secondary group (4.5% vs. 46.7%, p=0.004).

Conclusion

Santulli enterostomy could be applied as a temporary enterostomy in neonatal patients with various surgical abdominal diseases. Considering the high complication rate after secondary Santulli enterostomy closure, decision making on the timing of enterostomy closure should be done with caution.

Citations

Citations to this article as recorded by  
  • Complication risks of intestinal stomas in children: a case series
    Bulat K. Dzhenalaev, Sagidulla P. Dosmagambetov, Asylbek B. Tussupkaliev, Nailya S. Esenalina, Bauyrzhan N. Bissaliyev, Zhenisbek T. Baubekov, Kairat K. Zhalmukhambetov
    Russian Journal of Pediatric Surgery, Anesthesia and Intensive Care.2025; 15(4): 539.     CrossRef
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  • 1 Crossref
[English]
Significance of Contrast Enema in One-stage Transanal Endorectal Pull-through Operation for Hirschsprung Disease
Man Sik Shin, Mi Jung Lee, Myung Joon Kim, Young Ju Hong, He Kyung Chang, Seok Joo Han, Jung-Tak Oh
J Korean Assoc Pediatr Surg 2012;18(2):75-82.   Published online December 31, 2012
DOI: https://doi.org/10.0000/jkaps.2012.18.2.75

In one-stage transanal endorectal pull-through operation (TERPT) for Hirschsprung disease, preoperative evaluation by contrast enema (CE) is important tool in aspect of planning of surgical procedure as well as diagnosis. This study was to evaluate the significance of CE for identifying the extent of aganglionic bowel. A retrospective analysis was performed in 40 patients who underwent TERPT between 2003 and 2011. The authors reviewed the CE studies and their correlation with pathologic extent of aganglionosis. Total 66 contrast enemas were performed in 40 patients. Twenty patients underwent single CE, but 20 patients required multiple CEs. In single CE group, 17 had clear radiographic transition zone, but 3 had less definite transition zone. In multiple CE group, 17 patients who had equivocal finding in first or second CE had definite radiographic transition zone, but 3 patients of this group had less definite radiographic transition zones. Overall, 34 patients (85%) had clear radiographic transition zone by single or repeated CE. One (2.9%) out of 34 patients with clear radiographic transition zone had discordance between radiographic and pathologic transition zone. In contrast 4 (66.7%) out of 6 patients with equivocal radiographic transition zone had discordance between radiographic and pathologic transition zone. Observation of clear radiographic transition zone is important in preparation of TERPT, and repeated CE is helpful to reduce the discordance between radiographic and pathologic transition zone. Awareness of the possibility of discordance is also important if radiographic transitional zone is not clear.

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Case Report

[English]
Colon Perforation in Hyperimmunoglobulin E Syndrome: A Case Report
Jung-Tak Oh, In-Gyu Kim, Seok Joo Han, Ho Guen Kim, Eui Ho Hwang
J Korean Assoc Pediatr Surg 1996;2(2):151-155.   Published online December 31, 1996
DOI: https://doi.org/10.13029/jkaps.1996.2.2.151

Hyperimmunoglobulin E syndrome is a relatively rare primary immunodeficiency syndrome characterized by recurrent infection, abscess formation and marked elevation of serum IgE level. The common infectious organism is Staphylococcus aureus and recurrent infection indicates some defects in the immunologic system. Although the infection can affect various organs, gastrointestinal tract involvement is rare and only one case of colon perforation has been previously reported. Herein we report another one case of colon perforation which ocurred in an 8-year-old girl with hyperimmunoglobulin E syndrome. The patient was admitted to the hospital due to an abscess on right neck. The diagnosis of hyperimmunoglobulin E syndrome was made because she had eczematoid dermatitis on the face, pneumatocele on left upper lung field and markedly elevated serum Ig E level(> 15,000 IV/ml) with a past histories of frequent scalp abscesses and otitis media. Abdominal pain developed on the 13th day of admission and abdominal plain X-ray revealed free air. An exploratory laparatomy was performed and two free perforations of the transverse colon were noted. Segmental resection and double barrel colostomy were performed. Colostomy closure was done 4 month later and she had no gastrointestinal problem during a follow up period of 15 months.

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