Gastrointestinal Surgery is a specialized field of surgery that performs treatment and research on various diseases that occur in the gastrointestinal tract. The main diseases include gastric adenocarcinoma, gastrointestinal stromal tumor (GIST), morbid obesity, peptic ulcer disease, and other small intestine diseases.

The Division of Gastrointestinal Surgery in Seoul National University Hospital (SNUH GI Surgery) is dedicated to medical treatment, research, and education as the "The world best center of gastric cancer treatment and research".

In the part of medical treatment, about 1,000 surgeries were performed annually, accumulating many experiences such as 20,000 cases of cumulative gastric cancer surgery in the world for the first time in 2007, and 30,000 cases in 2019. SNUH GI Surgery has led clinical studies that underlie the latest surgical techniques such as laparoscopic surgery, functional preservation surgery, and fluorescence surgery. The qualitatively high long-term survival rate and postoperative mortality rate of 0.08% represent the world's highest grade. It was a historic incidence that A Harvard Medical School faculty brought his mother to Seoul National University Hospital for her gastric cancer surgery.

In the part of the research, publication and citation index (h-index), which evaluates research influence, ranked 8th in the world when evaluating "gastrectomy" as a keyword, and 12th in the world as "gastric cancer" (based on 2011-2015 publication). SNUH GI Surgery is leading the world. In the part of education, it plays an important role in training at home and abroad. More than 320 overseas medical personnel have been visiting SNUH GI Surgery to learn surgical practice as well as research on gastric cancer since 2007.
Professor Seoul National University Hospital Han-Kwang YANG
Hyuk-Joon LEE
Do Joong PARK
Seong-Ho KONG
Seoul National University
Bundang Hospital
Hyung-Ho KIM
Yun-Suhk SUH
Sang-Hoon AHN
Young Suk PARK
Boramae Medical Center Hye Seong AHN
Dong Seok HAN

Clinical Professor Seoul National University Hospital Yo-Seok CHO

Contractual Medical Doctor Seoul National University
Bundang Hospital
So Hyun KANG

Fellows Seoul National University Hospital Min Gyu KIM 
Jeesun KIM
Chungyoon KIM
Jae Kyun Park
Seung Ho LEE
Seoul National University
Bundang Hospital
Min Guan HONG
Mi Ra YOO
Duyeong HWANG

CPN Seoul National University Hospital Jiwon KIM
Hwi-Nyeong CHOE
Seoul National University
Bundang Hospital
Jae Jeong SEO
Hyejin KIM
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Korean
Seoul National University Hospital
1 Ha TS, Cho GS, Shin EJ, Ryu SW, Ryu KW, Kim MC, Hyung WJ, Kim CY, Lee HJ, Shin DW, Lee JH. Local complications are related to poor long-term outcome in patients undergoing curative gastrectomy for advanced gastric cancer. Korean Journal of Clinical Oncology. 2022; 18(1): 36-46.
2 Park JH, Kong SH, Park DJ, Yang HK, Kim JW, Park KB, Cho I, Hwang SH, Kim DW, Kim SM, Ryu SW, Gong SC, Jung PY, Ryu H, Kim SG, Choi CI, Kim DH, Choi SI, Park JH, Park DJ, Kim GY, Choi Y, Lee HJ. Development and Internal/External Validation of a Prediction Model for Weight Loss Following Gastric Cancer Surgery: A Multicenter Retrospective Study. Ann Clin Nutr Metab. 2022;14(2):55-65.

International
Seoul National University Hospital
1 Park SH, Lee HJ, Kim MC, Yook JH, Sohn TS, Hyung WJ, Ryu SW, Kurokawa Y, Kim YW, Han SU, Kim HH, Park DJ, Kim W, Lee SI, Cho H, Cho GS, Kim JJ, Kim KH, Yoo MW, Yang HK. Early experience of laparoscopic resection and comparison with open surgery for gastric gastrointestinal stromal tumor: a multicenter retrospective study. Sci Rep. 2022 Feb 10;12(1):2290.
2 Son SY, Hur H, Hyung WJ, Park YK, Lee HJ, An JY, Kim W, Kim HI, Kim HH, Ryu SW, Kim MC, Kong SH, Cho GS, Kim JJ, Park DJ, Ryu KW, Kim YW, Kim JW, Lee JH, Yang HK, Han SU; Korean Laparoendoscopic Gastrointestinal Surgery Study (KLASS) Group. Laparoscopic vs Open Distal Gastrectomy for Locally Advanced Gastric Cancer: 5-Year Outcomes of the KLASS-02 Randomized Clinical Trial. JAMA Surg. 2022 Oct 1;157(10):879-886.
3 Kim DJ, Hyung WJ, Park YK, Lee HJ, An JY, Kim HI, Kim HH, Ryu SW, Hur H, Kim MC, Kong SH, Kim JJ, Park DJ, Ryu KW, Kim YW, Kim JW, Lee JH, Yang HK, Han SU, Kim W; Korean Laparoendoscopic Gastrointestinal Surgery Study (KLASS) Group. Accuracy of preoperative clinical staging for locally advanced gastric cancer in KLASS-02 randomized clinical trial. Front Surg. 2022 Sep 23;9:1001245.
4 Lee S, Yang HK, Lee HJ, Park DJ, Kong SH, Park SK. Systematic review of gastric cancer-associated genetic variants, gene-based meta-analysis, and gene-level functional analysis to identify candidate genes for drug development. Front Genet. 2022 Aug 16;13:928783.
5 Park SH, Bae SW, Jeong KY, Koo EH, Choi JH, Park JH, Kong SH, Choi WS, Park DJ, Lee HJ, Yang HK. Clinical significance of lipid droplets formed in the peritoneal fluid after laparoscopic surgery for gastric cancer. Surg Endosc. 2022 Aug;36(8):6095-6104.
6 Wang CJ, Suh YS, Lee HJ, Park JH, Park SH, Choi JH, Alzahrani F, Alzahrani K, Kong SH, Park DJ, Cao H, Yang HK. Postoperative quality of life after gastrectomy in gastric cancer patients: a prospective longitudinal observation study. Ann Surg Treat Res. 2022 Jul;103(1):19-31.
7 Suh YS, Na D, Lee JS, Chae J, Kim E, Jang G, Lee J, Min J, Ock CY, Kong SH, George J, Zhang C, Lee HJ, Kim JI, Kim SJ, Kim WH, Lee C, Yang HK. Comprehensive Molecular Characterization of Adenocarcinoma of the Gastroesophageal Junction Between Esophageal and Gastric Adenocarcinomas. Ann Surg. 2022 Apr 1;275(4):706-717.
8 Hwang SH, Park DJ, Kim HH, Hyung WJ, Hur H, Yang HK, Lee HJ, Kim HI, Kong SH, Kim YW, Lee HH, Kim BS, Park YK, Lee YJ, Ahn SH, Lee IS, Suh YS, Park JH, Ahn S, Han SU. Short-Term Outcomes of Laparoscopic Proximal Gastrectomy With Double-Tract Reconstruction Versus Laparoscopic Total Gastrectomy for Upper Early Gastric Cancer: A KLASS 05 Randomized Clinical Trial. J Gastric Cancer. 2022 Apr;22(2):94-106.
9 Alzahrani K, Park JH, Lee HJ, Park SH, Choi JH, Wang C, Alzahrani F, Suh YS, Kong SH, Park DJ, Yang HK. Short-term Outcomes of Pylorus-Preserving Gastrectomy for Early Gastric Cancer: Comparison Between Extracorporeal and Intracorporeal Gastrogastrostomy. J Gastric Cancer. 2022 Apr;22(2):135-144. 
10 Pereira C, Park JH, Campelos S, Gullo I, Lemos C, Solorzano L, Martins D, Goncalves G, Leitao D, Lee HJ, Kong SH, Andre A, Borges C, Almeida D, Walbhy C, Almeida R, Kim WH, Carneiro F, Yang HK, Almeida GM, Oliveira C. Comparison of East-Asia and West- Europe cohorts explains disparities in survival outcomes and highlights predictive biomarkers of early gastric cancer aggressiveness. Int J Cancer. 2022 Mar 1;150(5):868-880.
11 Jun Y, Suh YS, Park S, Lee J, Kim JI, Lee S, Lee WP, Anczukow O, Yang HK, Lee C. Comprehensive Analysis of Alternative Splicing in Gastric Cancer Identifies Epithelial-Mesenchymal Transition Subtypes Associated with Survival. Cancer Res. 2022 Feb 15;82(4):543-555.
12 Park JH, Berlth F, Wang C, Wang S, Choi JH, Park SH, Suh YS, Kong SH, Park DJ, Lee HJ, Kwak Y, Kim WH, Yang HK. Mapping of the perigastric lymphatic network using indocyanine green fluorescence imaging and tissue marking dye in clinically advanced gastric cancer. Eur J Surg Oncol. 2022 Feb;48(2):411-417.
13 Knospe L, Gockel I, Jansen-Winkeln B, Thieme R, Niebisch S, Moulla Y, Stelzner S, Lyros O, Diana M, Marescaux J, Chalopin C, Kohler H, Pfahl A, Maktabi M, Park JH, Yang HK. New Intraoperative Imaging Tools and Image-Guided Surgery in Gastric Cancer Surgery. Diagnostics (Basel). 2022 Feb 16;12(2):507.
14 Yoon S, Song GY, Lee J, Lee HJ, Kong SH, Kim WH, Park DJ, Lee HJ, Yang HK. Ultrasound-guided bilateral subcostal transversus abdominis plane block in gastric cancer patients undergoing laparoscopic gastrectomy: a randomised-controlled double-blinded study. Surg Endosc. 2022 Feb;36(2):1044-1052.
15 Bae JS, Chang W, Kim SH, Choi Y, Kong SH, Lee HJ, Yang HK, Kwak Y, Kim HH, Han JK. Development of a predictive model for extragastric recurrence after curative resection for early gastric cancer. Gastric Cancer. 2022 Jan;25(1):255-264.
16 Bae SW, Berlth F, Jeong KY, Park JH, Choi JH, Park SH, Suh YS, Kong SH, Park DJ, Lee HJ, Lee C, Kim JI, Youn H, Choi H, Cheon GJ, Kang KW, Yang HK. Glucose metabolic profiles evaluated by PET associated with molecular characteristic landscape of gastric cancer. Gastric Cancer. 2022 Jan;25(1):149-160.
17 Shin C, Kim SI, Park SH, Shin JH, Lee CY, Yang HK, Lee HJ, Kong SH, Suh YS, Kim HJ, Jeon B. Sensitivity of Detecting Alpha-Synuclein Accumulation in the Gastrointestinal Tract and Tissue Volume Examined. J Mov Disord. 2022 Sep;15(3):264-268.
18 Min J, Zhang C, Bliton RJ, Caldwell B, Caplan L, Presentation KS, Park DJ, Kong SH, Lee HS, Washington MK, Kim WH, Lau KS, Magness ST, Lee HJ, Yang HK, Goldenring JR, Choi E. Dysplastic Stem Cell Plasticity Functions as a Driving Force for Neoplastic Transformation of Precancerous Gastric Mucosa. Gastroenterology. 2022 Oct;163(4):875-890.
19 Shin C, Han JY, Kim SI, Park SH, Yang HK, Lee HJ, Kong SH, Suh YS, Kim HJ, Choi YP, Jeon B. In vivo and autopsy validation of alphasynuclein seeding activity using RT-QuIC assay in the gastrointestinal tract of patients with Parkinson's disease. Parkinsonism Relat Disord. 2022 Oct;103:23-28.
20 Oh TJ, Lee HJ, Cho YM. East Asian perspectives in metabolic and bariatric surgery. J Diabetes Investig. 2022 May;13(5):756-761.
21 Choi Y, Kim N, Kim KW, Jo HH, Park J, Yoon H, Shin CM, Park YS, Lee DH, Oh HJ, Lee HS, Park YS, Ahn SH, Suh YS, Park DJ, Kim HH, Kim JW, Kim JW, Lee KW, Chang W, Park JH, Lee YJ, Lee KH, Kim YH. Sex-based differences in histology, staging, and prognosis among 2983 gastric cancer surgery patients. World J Gastroenterol. 2022 Mar 7;28(9):933-947.
22 Kang SH, Lee E, Lee S, Park YS, Ahn SH, Park DJ, Kim HH. Long-Term Outcomes of Single-Incision Distal Gastrectomy Compared with Conventional Laparoscopic Distal Gastrectomy: A Propensity Score-Matched Analysis. J Am Coll Surg. 2022 Mar 1;234(3):340-351.
23 Choi Y, Kim N, Yoon H, Shin CM, Park YS, Lee DH, Park YS, Ahn SH, Suh YS, Park DJ, Kim HH. The Incidence and Risk Factors for Metachronous Gastric Cancer in the Remnant Stomach after Gastric Cancer Surgery. Gut Liver. 2022 May 15;16(3):366-374.
24 Kim YG, Mun G, Kim M, Jeon B, Lee JH, Yoon D et al. A Study on the VR Goggle-based Vision System for Robotic Surgery. International Journal of Control, Automation and Systems. 2022 Sep;20(9):2959-2971.
Seoul National University Bundang Hospital2
1 Kim KH, Choi SH, Jang HC, Park YS, Oh TJ, Glucose Profiles Assessed by Intermittently Scanned Continuous Glucose Monitoring System during the Perioperative Period of Metabolic Surgery. Diabetes & Metabolism Journal 2022 Jan 24.
2 Jun YK, Suh YS, Park SH, Lee JE, Kim JI, Lee SH, Lee WP, Olga Anczukow, Yang HK , CharlesLee Comprehensive analysis of alternative splicing in gastric cancer identifies epithelial-mesenchymal transition subtypes associated with survival. Cancer Research 2022 Feb 15;82(4):543-555.
3 Kang SH, Lee EJ, Lee SJ, Park YS, Ahn SH, Park DJ, Kim HH, Long-Term Outcomes of Single-Incision Distal Gastrectomy Compared with Conventional Laparoscopic Distal Gastrectomy: A Propensity Score-Matched Analysis. Journal of the American College of Surgeons. 2022 Mar 1;234(3):340-351.
4 Lee SJ, Suh YS, Kang SH, Won YJ, Park YS, Ahn SHo & Kim HH. Should total omentectomy be performed for advanced gastric cancer?: The role of omentectomy during laparoscopic gastrectomy for advanced gastric cancer. Surgical Endoscopy. 2022 Feb 9. 
5 Kang SH, Min SH , Kim JW, Lee EJ, Lee SJ, Oh HJ, Park YS, Lee YJ , Kim JW , Ahn SH, Suh YS , Lee KW, Lee HS, Kim HH. Safety and efficacy of intraperitoneal paclitaxel plus intravenous fluorouracil, leucovorin, and oxaliplatin (FOLFOX) for gastric cancer with peritoneal metastasis. Annals of Surgical Oncology Accepted : 2022-02-23, Published : 2022 Mar 23 (Epub ahead of print)
6 Lee SJ, Kim HH. Minimally invasive surgery in advanced gastric cancer. Annals of Gastroenterological Surgery (2022) First published: 2022 February 25.
7 Kang SH, Yoo M, Hwang D, Lee E, Lee S, Park YS, Ahn SH, Suh YS, Kim HH. Postoperative pain and quality of life after single-incision distal gastrectomy versus multiport laparoscopic distal gastrectomy for early gastric cancer - a randomized controlled trial. SurgEndosc. 2022 Oct 28:1.
8 Im C, Park YS, Min SH, Kang SH, Lee S, Lee E, Yoo M, Hwang D, Ahn SH, Suh YS, Park DJ, KimHH. Postoperative major bleeding riskin patients using oral antiplatelets and/or anticoagulants after laparoscopic gastric cancer surgery. Ann Surg Treat Res. 2023 Feb;104(2):80-89.
9 Bae SW, Berlth F, Jeong KY, Park JH, Choi JH, Park SH, Suh YS, Kong SH, Park DJ, Lee HJ, Lee C, Kim JI, Youn H, Choi H, Cheon GJ, Kang KW, Yang HK. Glucose metabolic profiles evaluated by PET associated with molecular characteristic landscape of gastric cancer. Gastric Cancer. 2022 Jan;25(1):149-160.
10 Son SY, Hur H, Hyung WJ, Park YK, Lee HJ, An JY, Kim W, Kim HI, Kim HH, Ryu SW, Kim MC, Kong SH, Cho GS, Kim JJ, Park DJ, Ryu KW, Kim YW, Kim JW, Lee JH, Yang HK, Han SU; Korean Laparoendoscopic Gastrointestinal Surgery Study (KLASS) Group. Laparoscopic vs Open Distal Gastrectomy for Locally Advanced Gastric Cancer: 5-Year Outcomes of the KLASS-02 Randomized Clinical Trial. JAMA Surg. 2022 Oct 1;157(10):879-886.
11 Bae JS, Chang W, Kim SH, Choi Y, Kong SH, Lee HJ, Yang HK, Kwak Y, Kim HH, Han JK. Development of a predictive model for extragastric recurrence after curative resection for early gastric cancer. Gastric Cancer. 2022 Jan;25(1):255-264.
Boramae Medical Center
1 Han DS, Ahn DW, Lee JA, Lee MS, Chang MS. Gastric composite hemangioendothelioma, manifesting iron-deficiency anemia and endoscopically mimicking EGC type I. The Korean Journal of Internal Medicine. 2022;37(6):1260-1261.