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Joo Ha Hwang 5 Articles
International Digestive Endoscopy Network consensus on the management of antithrombotic agents in patients undergoing gastrointestinal endoscopy
Seung Joo Kang, Chung Hyun Tae, Chang Seok Bang, Cheol Min Shin, Young-Hoon Jeong, Miyoung Choi, Joo Ha Hwang, Yutaka Saito, Philip Wai Yan Chiu, Rungsun Rerknimitr, Christopher Khor, Vu Van Khien, Kee Don Choi, Ki-Nam Shim, Geun Am Song, Oh Young Lee, The Korean Society of Gastrointestinal Endoscopy Task Force on Clinical Practice Guidelines
Clin Endosc 2024;57(2):141-157.   Published online March 14, 2024
AbstractAbstract PDFPubReaderePub
Antithrombotic agents, including antiplatelet agents and anticoagulants, are widely used in Korea because of the increasing incidence of cardiocerebrovascular disease and the aging population. The management of patients using antithrombotic agents during endoscopic procedures is an important clinical challenge. The clinical practice guidelines for this issue, developed by the Korean Society of Gastrointestinal Endoscopy, were published in 2020. However, new evidence on the use of dual antiplatelet therapy and direct anticoagulant management has emerged, and revised guidelines have been issued in the United States and Europe. Accordingly, the previous guidelines were revised. Cardiologists were part of the group that developed the guideline, and the recommendations went through a consensus-reaching process among international experts. This guideline presents 14 recommendations made based on the Grading of Recommendations, Assessment, Development, and Evaluation methodology and was reviewed by multidisciplinary experts. These guidelines provide useful information that can assist endoscopists in the management of patients receiving antithrombotic agents who require diagnostic and elective therapeutic endoscopy. It will be revised as necessary to cover changes in technology, evidence, or other aspects of clinical practice.
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Mucosal Incision-Assisted Endoscopic Biopsy as an Alternative to Endoscopic Ultrasound-Guided Fine-Needle Aspiration/Biopsy for Gastric Subepithelial Tumor
Cheol Woong Choi, Joo Ha Hwang
Clin Endosc 2020;53(5):505-507.   Published online September 29, 2020


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  • Random Lasing for Bimodal Imaging and Detection of Tumor
    R. Gayathri, C. S. Suchand Sandeep, C. Vijayan, V. M. Murukeshan
    Biosensors.2023; 13(12): 1003.     CrossRef
  • Laparoscopic transgastric enucleation of a giant leiomyoma near the esophagogastric junction: A case report
    Jin Lee, Woo Yong Lee
    International Journal of Surgery Case Reports.2023; 105: 107989.     CrossRef
  • Prediction of Gastric Gastrointestinal Stromal Tumors before Operation: A Retrospective Analysis of Gastric Subepithelial Tumors
    Yu-Ning Lin, Ming-Yan Chen, Chun-Yi Tsai, Wen-Chi Chou, Jun-Te Hsu, Chun-Nan Yeh, Ta-Sen Yeh, Keng-Hao Liu
    Journal of Personalized Medicine.2022; 12(2): 297.     CrossRef
  • Natural History of Asymptomatic Esophageal Subepithelial Tumors of 30 mm or Less in Size
    Seokin Kang, Do Hoon Kim, Yuri Kim, Dongsub Jeon, Hee Kyong Na, Jeong Hoon Lee, Ji Yong Ahn, Kee Wook Jung, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung
    Journal of Korean Medical Science.2022;[Epub]     CrossRef
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  • 106 Download
  • 4 Web of Science
  • 4 Crossref
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Current Status of Endoscopic Ultrasonography in Gastrointestinal Subepithelial Tumors
Sang Gyun Kim, Ji Hyun Song, Joo Ha Hwang
Clin Endosc 2019;52(4):301-305.   Published online July 9, 2019
AbstractAbstract PDFPubReaderePub
Gastrointestinal subepithelial tumors (GSTs) are usually detected incidentally on endoscopic or radiologic examinations. In conventional endoscopy, a GST usually presents as a protuberant lesion with an intact mucosal surface. As the lesion is located beneath the mucosal layer of the gastrointestinal tract, conventional biopsy typically does not reveal the pathologic diagnosis. First, a GST should be differentiated from an extrinsic compression through the positional change of the patient during conventional endoscopic examination. In cases of GSTs originating from the gastrointestinal wall, endoscopic ultrasonography (EUS) can be beneficial for narrowing the differential diagnosis through delineation of echo findings and by determining the layer of origin. EUS findings can also help determine the management strategies for GSTs by making a differential diagnosis according to malignant potential.


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  • Endoscopic Resection of Upper Gastrointestinal Subepithelial Tumours: Our Clinical Experience and Results
    Mehmet Zeki Buldanlı, Oktay Yener
    Prague Medical Report.2022; 123(1): 20.     CrossRef
  • Gastric subepithelial tumor: long-term natural history and risk factors for progression
    Bokyung Kim, Seungkyung Kang, Eunwoo Lee, Jinju Choi, Hyunsoo Chung, Soo-Jeong Cho, Sang Gyun Kim
    Surgical Endoscopy.2022; 36(7): 5232.     CrossRef
  • Traumatic neuroma of remnant cystic duct mimicking duodenal subepithelial tumor: A case report
    Dong-Hwan Kim, Ji-Ho Park, Jin-Kyu Cho, Jung-Wook Yang, Tae-Han Kim, Sang-Ho Jeong, Young-Hye Kim, Young- Joon Lee, Soon-Chan Hong, Eun-Jung Jung, Young-Tae Ju, Chi-Young Jeong, Ju-Yeon Kim
    World Journal of Clinical Cases.2020; 8(17): 3821.     CrossRef
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  • 228 Download
  • 2 Web of Science
  • 3 Crossref
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Endoscopic Ultrasound-Fine Needle Aspiration versus Core Biopsy for the Diagnosis of Subepithelial Tumors
Kevin Webb, Joo Ha Hwang
Clin Endosc 2013;46(5):441-444.   Published online September 30, 2013
AbstractAbstract PDFPubReaderePub

Subepithelial lesions are frequently encountered and remain a diagnostic challenge. Imaging of subepithelial lesions using endoscopic ultrasound (EUS) can be helpful in narrowing the differential diagnosis of the lesion; however, definitive diagnosis typically requires tissue. Many methods for acquiring tissue exist including EUS-guided fine needle aspiration, Trucut biopsy, and fine needle biopsy. Obtaining adequate tissue is important for cytologic and histologic exams including immunohistochemical stains, thus a great deal of effort has been made to increase tissue acquisition in order to improve diagnostic yield in subepithelial lesions.


Citations to this article as recorded by  
  • Endoscopic Management of Gastric Subepithelial Tumor
    Hyunchul Lim
    Journal of Digestive Cancer Research.2022; 10(1): 16.     CrossRef
  • Magnetically Actuated Soft Capsule Endoscope for Fine-Needle Biopsy
    Donghoon Son, Hunter Gilbert, Metin Sitti
    Soft Robotics.2020; 7(1): 10.     CrossRef
  • Endoscopic ultrasound guided fine‐needle aspiration vs core needle biopsy for solid pancreatic lesions: Comparison of diagnostic accuracy and procedural efficiency
    Aslam Syed, Olivia Babich, Bharat Rao, Shailendra Singh, Neil Carleton, Abhishek Gulati, Archana Kulkarni, Mrinal Garg, Katie Farah, Gursimran Kochhar, Suzanne Morrissey, Marcia Mitre, Abhijit Kulkarni, Manish Dhawan, Jan F. Silverman, Majed Pharaon, Shya
    Diagnostic Cytopathology.2019; 47(11): 1138.     CrossRef
  • Cytology and histology: Complementary diagnostic modalities during endoscopic ultrasound-guided tissue acquisition
    Norge Vergara, Roseann I. Wu, Stuti Shroff, Cindy M. McGrath
    Techniques in Gastrointestinal Endoscopy.2018; 20(1): 10.     CrossRef
  • Echoendoscopic ablative therapy for solid pancreatic tumors
    Woo Hyun Paik, Dong Wan Seo
    Journal of Digestive Diseases.2017; 18(3): 135.     CrossRef
  • Via mucosa incision EUS-guided sampling for the diagnosis of conventional endoscopic biopsy-negative gastric wall thickening
    Hongbo Shan, Xiaoyan Gao, Guangyu Luo, Jieqing Xiang, Bilv Zhong, Xiaofang Qiu, Shiyong Lin, Shuhong Li, Yin Li, Guoliang Xu, Rong Zhang
    Scientific Reports.2017;[Epub]     CrossRef
  • Diagnosis of Gastric Subepithelial Tumor: Focusing on Endoscopic Ultrasonography
    Eun Young Kim
    The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2015; 15(1): 9.     CrossRef
  • Which Needle Is Better for Diagnosing Subepithelial Lesions?
    Eun Young Kim
    Clinical Endoscopy.2015; 48(2): 91.     CrossRef
  • 6,263 View
  • 54 Download
  • 8 Crossref
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Confocal Microscopy in the Esophagus and Stomach
Adam Templeton, Joo Ha Hwang
Clin Endosc 2013;46(5):445-449.   Published online September 30, 2013
AbstractAbstract PDFPubReaderePub

Probe-based confocal microscopy (pCLE) is actively being investigated for applications in the esophagus and stomach. The use of pCLE allows real-time in vivo microscopy to evaluate the microarchitecture of the mucosal epithelium. pCLE appears to be particularly useful in identifying mucosal dysplasia and early malignancies that cannot be clearly distinguished using high-definition white light endoscopy, chromoendoscopy, or magnification endoscopy. In addition, the ability to detect dysplastic tissue in real-time may shift the current screening practice from random biopsy to targeted biopsy of esophageal and gastric cancers and their precursor lesions. We will review the use of pCLE for detection and surveillance of upper gastrointestinal early luminal malignancy.


Citations to this article as recorded by  
  • Probe‐based confocal laser endomicroscopy versus biopsies in the diagnostics of oesophageal and gastric lesions: A prospective, pathologist‐blinded study
    Marek Kollar, Jana Krajciova, Lucia Prefertusova, Eva Sticova, Jana Maluskova, Zuzana Vackova, Jan Martinek
    United European Gastroenterology Journal.2020; 8(4): 436.     CrossRef
  • Overview on new progress of hereditary diffuse gastric cancer withCDH1variants
    Mu-Ni Hu, Shu-Hui Hu, Xing-Wei Zhang, Shu-Min Xiong, Huan Deng
    Tumori Journal.2020; 106(5): 346.     CrossRef
  • Role of endoscopy in the management of hereditary diffuse gastric cancer syndrome
    Shria Kumar, Jessica M Long, Gregory G Ginsberg, Bryson W Katona
    World Journal of Gastroenterology.2019; 25(23): 2878.     CrossRef
  • Diagnosis and Management of Gastric Intestinal Metaplasia: Current Status and Future Directions
    Robert J. Huang, Alyssa Y. Choi, Camtu D. Truong, Matthew M. Yeh, Joo Ha Hwang
    Gut and Liver.2019; 13(6): 596.     CrossRef
  • Probe-based confocal laser endomicroscopy (pCLE): a preclinical investigation of the male genital tract
    Matthias Trottmann, Ronald Sroka, Herbert Stepp, Bernhard Liedl, Armin J. Becker, Christian G. Stief, Sabine Kölle
    Lasers in Medical Science.2016; 31(1): 57.     CrossRef
  • How to manage gastric polyps
    Gandhi Lanke, Atin Agarwal, Jeffrey H. Lee
    International Journal of Gastrointestinal Intervention.2016; 5(3): 159.     CrossRef
  • Prevención, escrutinio y seguimiento endoscópico de lesiones premalignas del tracto digestivo superior y medio
    Daniel Ruiz-Romero, Félix Ignacio Téllez-Ávila, Rafael Barreto-Zúñiga, Luis Eduardo Zamora-Nava.
    Endoscopia.2015; 27(3): 135.     CrossRef
  • Effect of Training in Upper Endoscopic Biopsy
    Chang Seok Bang, Gwang Ho Baik, Jong Hyeok Kim, Jin Bong Kim, Ki Tae Suk, Jai Hoon Yoon, Yeon Soo Kim, Dong Joon Kim
    The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2015; 15(1): 33.     CrossRef
  • Real-time in-vivo imaging of pulmonary capillary perfusion using probe-based confocal laser scanning endomicroscopy in pigs
    Sybille Gruber, Isabella Spielauer, Stefan Böhme, David Baron, Klaus Markstaller, Roman Ullrich, Klaus Ulrich Klein
    European Journal of Anaesthesiology.2015; 32(6): 392.     CrossRef
  • Recent Advances in Molecular Imaging of Premalignant Gastrointestinal Lesions and Future Application for Early Detection of Barrett Esophagus
    Kwang Hyun Ko, Na Young Han, Chang Il Kwon, Hoo Keun Lee, Jong Min Park, Eun Hee Kim, Ki Baik Hahm
    Clinical Endoscopy.2014; 47(1): 7.     CrossRef
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  • 10 Crossref
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