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											| Gastroenterology / Original Article											Endoscopic features of cytomegalovirus disease of the upper gastrointestinal tract between transplant and non-transplant patients Yuri Kim, Do Hoon Kim, Myeongsook Seo, Hee Kyong Na, Kee Wook Jung, Ji Yong Ahn, Jeong Hoon Lee, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung 
												Korean J Intern Med. 2025;40(3):394-403.   Published online March 25, 2025												 
													Background/Aims: Cytomegalovirus (CMV) disease in the upper gastrointestinal (UGI) tract frequently occurs in immunocompromised patients. However, data regarding UGI CMV disease in non-transplant patients compared with those in transplant recipients are limited. Therefore, we compared the clinical c..												 |  |  
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											| Gastroenterology / Original Article											Clinical course of asymptomatic duodenal subepithelial lesions Seokin Kang, Kwangbeom Park, Do Hoon Kim, Yuri Kim, Hee Kyong Na, Jeong Hoon Lee, Ji Yong Ahn, Kee Wook Jung, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung 
												Korean J Intern Med. 2024;39(4):603-611.   Published online June 13, 2024												 
													Background/Aims: There is limited knowledge regarding the management of duodenal subepithelial lesions (SELs) owing to a lack of understanding of their natural course. This study aimed to assess the natural course of asymptomatic duodenal SELs and provide management recommendations.
Methods: Patien..												 |  |  
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											| Gastroenterology / Original Article											Predicting Helicobacter pylori infection from endoscopic features Jun-young Seo, Ji Yong Ahn, Seonok Kim, Hee Kyong Na, Jeong Hoon Lee, Kee Wook Jung, Do Hoon Kim, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung 
												Korean J Intern Med. 2024;39(3):439-447.   Published online April 30, 2024												 
													Background: Helicobacter pylori infection, prevalent in more than half of the global population, is associated with various gastrointestinal diseases, including peptic ulcers and gastric cancer. The effectiveness of early diagnosis and treatment in preventing gastric cancer highlights the nee..												 |  |  
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											| Gastroenterology / Original Article											Ten-year experience of esophageal endoscopic submucosal dissection of superficial esophageal neoplasms in a single center Hyung Chul Park, Do Hoon Kim, Eun Jeong Gong, Hee Kyong Na, Ji Yong Ahn, Jeong Hoon Lee, Kee Wook Jung, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung, Jin-Ho Kim 
												Korean J Intern Med. 2016;31(6):1064-1072.   Published online September 13, 2016												 
													Background/Aims: Endoscopic submucosal dissection (ESD) of a superficial esophageal neoplasm (SEN) is a technically difficult procedure. We investigated the clinical outcomes of ESD to determine its feasibility and effectiveness for the treatment of SEN.
Methods: Patients who underwent ESD for SEN ..												 |  |  |