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In Kyu Kwon

Yonsei University · Medicine

About the Lab

Professor In Kyu Kwon's research lab specializes in minimally invasive surgical oncology, with a focus on improving outcomes in gastrointestinal cancers through advanced imaging, artificial intelligence, and surgical innovation. The lab investigates the application of fluorescent lymphography, AI-driven endoscopic image analysis, and long-term results of laparoscopic surgery in gastric cancer. It also explores metabolic mechanisms following bariatric surgery, particularly glucose homeostasis and intestinal glucose excretion. The lab integrates clinical research with translational science to enhance diagnostic accuracy and surgical decision-making.

gastric cancerartificial intelligencelaparoscopic surgeryfluorescent lymphographymetabolic surgery

Research Overview

Papers
76
Total Citations
1,553
Papers (5y)
29
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
29total
2021
2022
2024
2025
2026
Citations per year (5y)
280total
20212022202420252026

Selected Papers

15
1
Article|172 citations·2018
Fluorescent Lymphography–Guided Lymphadenectomy During Robotic Radical Gastrectomy for Gastric Cancer
In Gyu Kwon, Taeil Son, Hyoung‐Il Kim, Woo Jin Hyung
SJR Q1JAMA SurgeryOA

This study's findings suggest that fluorescent lymphography may be useful intraoperatively for identifying and retrieving all necessary lymph nodes for a complete and thorough lymphadenectomy.

Pulmonary and Respiratory MedicineMedicine
2
Article|157 citations·2019
A Lesion-Based Convolutional Neural Network Improves Endoscopic Detection and Depth Prediction of Early Gastric Cancer
Hong Jin Yoon, Seung Up Kim, Jie‐Hyun Kim, Ji-Soo Keum, Sang-Il Oh, Junik Jo, Jaeyoung Chun, Young Hoon Youn, Hyojin Park, In Gyu Kwon, Seung Ho Choi, Sung Hoon Noh
SJR Q1Journal of Clinical MedicineOA

In early gastric cancer (EGC), tumor invasion depth is an important factor for determining the treatment method. However, as endoscopic ultrasonography has limitations when measuring the exact depth in a clinical setting as endoscopists often depend on gross findings and personal experience. The present study aimed to develop a model optimized for EGC detection and depth prediction, and we investigated factors affecting artificial intelligence (AI) diagnosis. We employed a visual geometry group(

Pulmonary and Respiratory MedicineMedicine
3
letter|144 citations·2022
Laparoscopic vs Open Distal Gastrectomy for Locally Advanced Gastric Cancer
Sang‐Yong Son, Hoon Hur, Woo Jin Hyung, Youngkyu Park, Hyuk-Joon Lee, Ji Yeong An, Wook Kim, Hyoung‐Il Kim, Hyung‐Ho Kim, Seung Wan Ryu, Min‐Chan Kim, Seong‐Ho Kong
SJR Q1JAMA SurgeryOA

Importance: The long-term safety of laparoscopic distal gastrectomy for locally advanced gastric cancer (AGC) remains uncertain given the lack of 5-year follow-up results. Objective: To compare the 5-year follow-up results in patients with clinically AGC enrolled in the Korean Laparoendoscopic Gastrointestinal Surgery Study (KLASS)-02 randomized clinical trial who underwent laparoscopic or open distal gastrectomy. Design, Setting, and Participants: The KLASS-02, a multicenter randomized clinical

Pulmonary and Respiratory MedicineMedicine
4
Review|142 citations·2014
Is microsatellite instability a prognostic marker in gastric cancer?: A systematic review with meta-analysis
Yoon Young Choi, Jung Min Bae, Ji Yeong An, In Gyu Kwon, In Cho, Hyun Beak Shin, Eiji Tanaka, Mohammad Aburahmah, Hyoung‐Il Kim, Jae‐Ho Cheong, Woo Jin Hyung, Sung Hoon Noh
SJR Q1Journal of Surgical OncologyOA

MSI gastric cancer was associated with good prognosis but there was heterogeneity in the recent studies. Changed epidemiology and effects of chemotherapy are potential causes of heterogeneity. Establishing a consensus for defining MSI in gastric cancer should be preferred for future studies.

Pathology and Forensic MedicineMedicine
5
Article|77 citations·2019
Prognostic significance of body mass index and prognostic nutritional index in stage II/III gastric cancer
Su Hyung Park, Sejin Lee, Jeong Ho Song, Seo Hee Choi, Gyu Seok Cho, In Gyu Kwon, Taeil Son, Hyoung‐Il Kim, Jae‐Ho Cheong, Woo Jin Hyung, Seung Ho Choi, Sung Hoon Noh
SJR Q1European Journal of Surgical OncologyOA
Pulmonary and Respiratory MedicineMedicine
6
Article|55 citations·2014
Minimally invasive surgery for remnant gastric cancer: a comparison with open surgery
In Gyu Kwon, In Cho, Ali Güner, Yoon Young Choi, Hyun Beak Shin, Hyoung‐Il Kim, Ji Yeong An, Jae‐Ho Cheong, Sung Hoon Noh, Woo Jin Hyung
SJR Q1Surgical EndoscopyOA
Pulmonary and Respiratory MedicineMedicine
7
Article|43 citations·2014
Minimally invasive surgery as a treatment option for gastric cancer in the elderly: comparison with open surgery for patients 80 years and older
In Gyu Kwon, In Cho, Ali Güner, Hyoung‐Il Kim, Sung Hoon Noh, Woo Jin Hyung
SJR Q1Surgical EndoscopyOA
Pulmonary and Respiratory MedicineMedicine
8
Article|35 citations·2020
Serum glucose excretion after Roux-en-Y gastric bypass: a potential target for diabetes treatment
In Gyu Kwon, Chan Woo Kang, Jong Pil Park, Ju Hun Oh, Eun Kyung Wang, Tae Young Kim, Jin Sol Sung, Namhee Park, Yang Jong Lee, Hak‐Joon Sung, Eun Jig Lee, Woo Jin Hyung
SJR Q1GutOA

Objective The mechanisms underlying type 2 diabetes resolution after Roux-en-Y gastric bypass (RYGB) are unclear. We suspected that glucose excretion may occur in the small bowel based on observations in humans. The aim of this study was to evaluate the mechanisms underlying serum glucose excretion in the small intestine and its contribution to glucose homeostasis after bariatric surgery. Design 2-Deoxy-2-[ 18 F]-fluoro-D-glucose (FDG) was measured in RYGB-operated or sham-operated obese diabeti

SurgeryMedicine
9
Article|33 citations·2014
Risk factors for complications during surgical treatment of remnant gastric cancer
In Gyu Kwon, In Cho, Yoon Young Choi, Woo Jin Hyung, Choong Bai Kim, Sung Hoon Noh
SJR Q1Gastric CancerOA
Pulmonary and Respiratory MedicineMedicine
10
Article|30 citations·2016
Novel Intracorporeal Esophagojejunostomy Using Linear Staplers During Laparoscopic Total Gastrectomy: π-Shaped Esophagojejunostomy, 3-in-1 Technique
In Gyu Kwon, Young‐Gil Son, Seung Wan Ryu
SJR Q1Journal of the American College of SurgeonsOA

Department of Surgery, Keimyung University School of Medicine, Daegu, Korea *Correspondence address: Seung Wan Ryu, MD, PhD, Department of Surgery, Keimyung University School of Medicine, 56 Dalseong-Ro, Jung-Gu, Daegu 41931, Republic of Korea. email: [email protected] Received May 18, 2016; Revised June 18, 2016; Accepted June 20, 2016. Disclosure Information: Nothing to disclose. Support: This research was supported by the Keimyung University Research Grant of 2015 and 2016.

Pulmonary and Respiratory MedicineMedicine
11
Article|15 citations·2018
2014–2017 Nationwide Bariatric and Metabolic Surgery Report in Korea
In Gyu Kwon, Jong Won Kim, Gil Ho Kang, Dong Wook Kim, Sung Geun Kim, Seong Min Kim, Seong Soo Kim, Yong Jin Kim, Wook Kim, Jong‐Han Kim, Ji Heon Kim, Jin-Jo Kim
Journal of Metabolic and Bariatric SurgeryOA
SurgeryMedicine
12
Article|14 citations·2019
Discontinuous Bubble Immersed Finite Element Method for Poisson-Boltzmann Equation
In Gyu Kwon, Do Y. Kwak
SJR Q1Communications in Computational Physics
Computational MechanicsEngineering
13
Article|9 citations·2015
Roux-en-Y gastric bypass stimulates hypothalamic miR-122 and inhibits cardiac and hepatic miR-122 expressions
In Gyu Kwon, Tae Kyung Ha, Seung Wan Ryu, Eunyoung Ha
SJR Q1Journal of Surgical ResearchOA
Cancer ResearchBiochemistry, Genetics and Molecular Biology
14
Article|8 citations·2021
Discontinuous bubble immersed finite element method for Poisson-Boltzmann-Nernst-Planck model
In Gyu Kwon, Do Y. Kwak, Gwanghyun Jo
SJR Q1Journal of Computational Physics
Computational MechanicsEngineering
15
Article|8 citations·2021
A Deep Neural Network Based on ResNet for Predicting Solutions of Poisson–Boltzmann Equation
In Gyu Kwon, Gwanghyun Jo, Kwang-Seong Shin
SJR Q2ElectronicsOA

The Poisson–Boltzmann equation (PBE) arises in various disciplines including biophysics, electrochemistry, and colloid chemistry, leading to the need for efficient and accurate simulations of PBE. However, most of the finite difference/element methods developed so far are rather complicated to implement. In this study, we develop a ResNet-based artificial neural network (ANN) to predict solutions of PBE. Our networks are robust with respect to the locations of charges and shapes of solvent–solut

Materials ChemistryMaterials Science

Research Areas

Pulmonary and Respiratory MedicineSurgeryComputational MechanicsPathology and Forensic MedicineNutrition and DieteticsOncology

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