In Geol Ho
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
In Geol Ho has a total of 85 co-authors. Here are the top co-authors by number of shared publications:
- Kyong Ihn
Division of Pediatric Surgery, Severance Children's Hospital, Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
10 shared publications - Seok Joo Han
Division of Pediatric Surgery, Department of Surgery, Severance Children’s Hospital, Yonsei University College of Medicine, Seoul, Korea
10 shared publications - Jung-Tak Oh
Division of Pediatric Surgery, Severance Children’s Hospital, Yonsei University College of Medicine, Seoul, Korea
6 shared publications - Ho Jong Jeon
Division of Pediatric Surgery, Department of Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea
4 shared publications - Chaeyoun Oh
Department of Pediatric Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan 15355, Republic of Korea
2 shared publications - Dae Yeon Kim
Division of Pediatric Surgery, Asan Medical Center Children’s Hospital, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
2 shared publications
Latest Publications
- 24 January 2026
- Published by Elsevier in Journal of Pediatric Surgery
- Vol. 61 (5) , 162948
A multicenter retrospective analysis by the Korean Association of Pediatric Surgeons comparing laparoscopic and open surgical repair of congenital duodenal obstruction
- 24 January 2026
- Published by Elsevier in Journal of Pediatric Surgery
- Vol. 61 (5) , 162948
A multicenter retrospective analysis by the Korean Association of Pediatric Surgeons comparing laparoscopic and open surgical repair of congenital duodenal obstruction
- Open Access
- 1 January 2026
- Published by XMLink in Yonsei Medical Journal
- Vol. 67 (11) , 814
Neurodevelopmental Outcomes of Very Preterm Infants Who Underwent Neonatal Gastrointestinal Surgery: A Single-Center Retrospective Cohort Study
Kim JH, et al. Yonsei Med J. 2026 ;67:e62. https://doi.org/10.3349/ymj.2026.0399
- 1 January 2026
- Published by XMLink in Yonsei Medical Journal
- Vol. 67 (11) , 814
Open AccessNeurodevelopmental Outcomes of Very Preterm Infants Who Underwent Neonatal Gastrointestinal Surgery: A Single-Center Retrospective Cohort Study
Kim JH, et al. Yonsei Med J. 2026 ;67:e62. https://doi.org/10.3349/ymj.2026.0399
- Open Access
Pediatric Foreign Body Ingestion: Analysis of Patient Characteristics and Surgical Treatment
Background/Objectives: Foreign body (FB) ingestion is a common occurrence in children. We aimed to investigate the characteristics of patients hospitalized in the pediatric surgery department for FB ingestion and those requiring surgical treatment. Methods: We retrospectively analyzed pediatric patients admitted to the department of pediatric surgery at a single center for FB ingestion from June 2018 to September 2023. Overall, 35 patients were included. Results: The median age was 25.0 months (range: 7–204 months), with male predominance. Forty percent (14/35) of patients presented with symptoms at admission, including abdominal pain, vomiting, and fever; ingestion was unwitnessed in 42.9%. The median number of ingested FBs was 2.0 (range: 1–25), with magnets being the most common type (51.4%). Surgery was required in 51.4% of cases due to complications or impaction. These cases showed significantly higher symptomatic presentation rates (72.2% vs. 5.9%, p < 0.01), unwitnessed ingestion (66.7 vs. 17.6%, p = 0.006), and more ingested FBs (median 5.0 vs. 1.0, p = 0.001). Magnet ingestion was more frequent in these patients. Conclusions: FB ingestion predominantly affects young male children. Magnet ingestion frequently requires surgical intervention, underscoring the importance of preventive measures and safer environments. Surgical treatment should be considered in patients with symptomatic presentation, multiple ingested objects, or an uncertain ingestion history.
Open AccessPediatric Foreign Body Ingestion: Analysis of Patient Characteristics and Surgical Treatment
Background/Objectives: Foreign body (FB) ingestion is a common occurrence in children. We aimed to investigate the characteristics of patients hospitalized in the pediatric surgery department for FB ingestion and those requiring surgical treatment. Methods: We retrospectively analyzed pediatric patients admitted to the department of pediatric surgery at a single center for FB ingestion from June 2018 to September 2023. Overall, 35 patients were included. Results: The median age was 25.0 months (range: 7–204 months), with male predominance. Forty percent (14/35) of patients presented with symptoms at admission, including abdominal pain, vomiting, and fever; ingestion was unwitnessed in 42.9%. The median number of ingested FBs was 2.0 (range: 1–25), with magnets being the most common type (51.4%). Surgery was required in 51.4% of cases due to complications or impaction. These cases showed significantly higher symptomatic presentation rates (72.2% vs. 5.9%, p < 0.01), unwitnessed ingestion (66.7 vs. 17.6%, p = 0.006), and more ingested FBs (median 5.0 vs. 1.0, p = 0.001). Magnet ingestion was more frequent in these patients. Conclusions: FB ingestion predominantly affects young male children. Magnet ingestion frequently requires surgical intervention, underscoring the importance of preventive measures and safer environments. Surgical treatment should be considered in patients with symptomatic presentation, multiple ingested objects, or an uncertain ingestion history.
- Open Access
- 15 June 2025
- Published by The Korean Society of Endo-Laparoscopic & Robotic Surgery in Journal of Minimally Invasive Surgery
- Vol. 28 (2) , 108-111
Design and implementation of modular laparoscopic general surgery models for surgical education
Sung Hyun Kim, Sang Sik Cho, In Geol Ho, Ho Seung Kim, Chang Moo Kang. Journal of Minimally Invasive Surgery 2025;28:108-11. https://doi.org/10.7602/jmis.2025.28.2.108
- 15 June 2025
- Published by The Korean Society of Endo-Laparoscopic & Robotic Surgery in Journal of Minimally Invasive Surgery
- Vol. 28 (2) , 108-111
Open AccessDesign and implementation of modular laparoscopic general surgery models for surgical education
Sung Hyun Kim, Sang Sik Cho, In Geol Ho, Ho Seung Kim, Chang Moo Kang. Journal of Minimally Invasive Surgery 2025;28:108-11. https://doi.org/10.7602/jmis.2025.28.2.108
- Open Access
- 7 August 2024
- Published by Springer Nature in BMC Pediatrics
- Vol. 24 (1) , 1-6
Learning curve of ultrasound-guided percutaneous central venous port placement in children
Background: Although percutaneous central venous port (CVP) placement can be quickly performed using minimally invasive surgery, short- and long-term complications can occur. Beginner pediatric surgeons must overcome learning curves influencing operative time and complication rates. However, few studies have been conducted on the learning curve of ultrasound-guided percutaneous CVP placement. This study analyzed the progress, results, complications, and learning curve of ultrasound-guided percutaneous CVP placement in children performed by a single beginner pediatric surgeon. Methods: Data from 30 children who underwent ultrasound-guided percutaneous CVP placement were reviewed. The patient characteristics, procedure indications, access veins, operator positions, operative times, and complication rates were analyzed. Results: Cumulative sum analysis revealed two stages in the learning curve: stage 1 (initial 15 cases) and stage 2 (subsequent cases). There was a correlation between the number of cases and operative time (Pearson correlation = -0.499, p = 0.005); the operative time was significantly longer in the first than in the second stage (p = 0.007). Although surgical complications occurred more frequently in the early (26.7%) than in the late stage, it was not significantly different between the two stages (p = 0.1). During the study period, the operative time was significantly reduced owing to the change in the operator’s position from the patient’s right side to the patient’s head (p = 0.005). Conclusions: Ultrasound-guided percutaneous CVP placement was a safe surgery that allowed a beginner pediatric surgeon to overcome the learning curve after only 15 cases and involved a relatively small number of complications compared with other pediatric surgeries. Additionally, the suitable position of the operator affected the surgical outcomes.
- 7 August 2024
- Published by Springer Nature in BMC Pediatrics
- Vol. 24 (1) , 1-6
Open AccessLearning curve of ultrasound-guided percutaneous central venous port placement in children
Background: Although percutaneous central venous port (CVP) placement can be quickly performed using minimally invasive surgery, short- and long-term complications can occur. Beginner pediatric surgeons must overcome learning curves influencing operative time and complication rates. However, few studies have been conducted on the learning curve of ultrasound-guided percutaneous CVP placement. This study analyzed the progress, results, complications, and learning curve of ultrasound-guided percutaneous CVP placement in children performed by a single beginner pediatric surgeon. Methods: Data from 30 children who underwent ultrasound-guided percutaneous CVP placement were reviewed. The patient characteristics, procedure indications, access veins, operator positions, operative times, and complication rates were analyzed. Results: Cumulative sum analysis revealed two stages in the learning curve: stage 1 (initial 15 cases) and stage 2 (subsequent cases). There was a correlation between the number of cases and operative time (Pearson correlation = -0.499, p = 0.005); the operative time was significantly longer in the first than in the second stage (p = 0.007). Although surgical complications occurred more frequently in the early (26.7%) than in the late stage, it was not significantly different between the two stages (p = 0.1). During the study period, the operative time was significantly reduced owing to the change in the operator’s position from the patient’s right side to the patient’s head (p = 0.005). Conclusions: Ultrasound-guided percutaneous CVP placement was a safe surgery that allowed a beginner pediatric surgeon to overcome the learning curve after only 15 cases and involved a relatively small number of complications compared with other pediatric surgeries. Additionally, the suitable position of the operator affected the surgical outcomes.
- Open Access
- 1 January 2024
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 30 (1) , 9-13
Perinatally Detected Subhepatic Cysts: Choledochal Cyst? or Cystic Biliary Atresia?
Yeon HJ, et al. Adv Pediatr Surg. 2024 Jun;30(1):9-13. https://doi.org/10.13029/aps.2024.30.1.9
- 1 January 2024
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 30 (1) , 9-13
Open AccessPerinatally Detected Subhepatic Cysts: Choledochal Cyst? or Cystic Biliary Atresia?
Yeon HJ, et al. Adv Pediatr Surg. 2024 Jun;30(1):9-13. https://doi.org/10.13029/aps.2024.30.1.9
- Open Access
- 1 January 2023
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 29 (2) , 58-64
High Jejunal Atresia: Clinical Characteristics and Treatment
Jeon HJ, et al. Adv Pediatr Surg. 2023 Dec;29(2):58-64. https://doi.org/10.13029/aps.2023.29.2.58
- 1 January 2023
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 29 (2) , 58-64
Open AccessHigh Jejunal Atresia: Clinical Characteristics and Treatment
Jeon HJ, et al. Adv Pediatr Surg. 2023 Dec;29(2):58-64. https://doi.org/10.13029/aps.2023.29.2.58
- Open Access
Comparison of Surgical Outcomes of Laparoscopic Glue and Laparoscopic Suture Hernioplasty in Pediatric Female Inguinal Hernia
This study aimed to report the surgical outcomes of laparoscopic glue hernioplasty (LGH) compared with conventional laparoscopic suture hernioplasty (LSH) in pediatric female inguinal hernia repair. We retrospectively analyzed 465 female pediatric patients who underwent laparoscopic inguinal hernia repair between January 2013 and December 2020. LGH and LSH were performed in 95 and 370 cases, respectively. Surgical outcomes (length of hospital stay, operative time, complications, and recurrences) were compared between the LGH and LSH groups. We found that the operation times for bilateral hernia repair were shorter in the LGH group (LGH: 35.5 ± 8.2 min, LSH: 45.2 ± 11.6 min; p < 0.001). No significant differences in complications or recurrences were observed between the two groups during the follow-up period. Our findings suggest that LGH is a feasible and easily applied surgical technique for the treatment of pediatric female inguinal hernia.
Open AccessComparison of Surgical Outcomes of Laparoscopic Glue and Laparoscopic Suture Hernioplasty in Pediatric Female Inguinal Hernia
This study aimed to report the surgical outcomes of laparoscopic glue hernioplasty (LGH) compared with conventional laparoscopic suture hernioplasty (LSH) in pediatric female inguinal hernia repair. We retrospectively analyzed 465 female pediatric patients who underwent laparoscopic inguinal hernia repair between January 2013 and December 2020. LGH and LSH were performed in 95 and 370 cases, respectively. Surgical outcomes (length of hospital stay, operative time, complications, and recurrences) were compared between the LGH and LSH groups. We found that the operation times for bilateral hernia repair were shorter in the LGH group (LGH: 35.5 ± 8.2 min, LSH: 45.2 ± 11.6 min; p < 0.001). No significant differences in complications or recurrences were observed between the two groups during the follow-up period. Our findings suggest that LGH is a feasible and easily applied surgical technique for the treatment of pediatric female inguinal hernia.
- Open Access
- 1 January 2022
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 28 (2) , 47-54
Outcomes of Pediatric Airway Surgeries Performed by a Single Pediatric Surgeon
Jeon HJ, et al. Adv Pediatr Surg. 2022 Dec;28(2):47-54. https://doi.org/10.13029/aps.2022.28.2.47
- 1 January 2022
- Published by XMLink in Advances in Pediatric Surgery
- Vol. 28 (2) , 47-54
Open AccessOutcomes of Pediatric Airway Surgeries Performed by a Single Pediatric Surgeon
Jeon HJ, et al. Adv Pediatr Surg. 2022 Dec;28(2):47-54. https://doi.org/10.13029/aps.2022.28.2.47