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Hemato-oncology / Original Article
Real-world treatment outcomes in South Korean patients with epidermal growth factor receptor-mutant non-small cell lung cancer
Young Saing Kim, Eun Young Lee, Hyun Woo Lee, Jin-Hyuk Choi, Tae-Hwan Kim, Yong Won Choi, Mi Sun Ahn
Korean J Intern Med. 2025;40(6):1029-1041. Published online October 31, 2025
Background/Aims: This study aimed to assess the real-world treatment outcomes in South Korean patients with epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) receiving first-line (1L) EGFR tyrosine kinase inhibitors (TKIs).
Methods: We used the Health Insurance Revie..
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Endocrinology-metabolism / Original Article
Association between metabolic dysfunction-associated steatotic liver disease and the risk of thyroid cancer: a nationwide cohort study
Jeongmin Lee, Jeongeun Kwak, Min-Hee Kim, Seung-Hwan Lee, Jae-Hyoung Cho, Dong-Jun Lim, Jung Min Lee, Sang-Ah Chang, Hun-Sung Kim
Korean J Intern Med. 2025;40(5):813-822. Published online August 26, 2025
Background/Aims: Metabolic dysfunction-associated steatotic liver disease (MASLD) is associated with various metabolic disorders; however, its relationship with thyroid cancer remains unclear. This study investigated the association between MASLD and the risk of thyroid cancer.
Methods: This retros..
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Cardiology / Original Article
Impact of guideline-directed medical therapy on the cardiac or non-cardiac death in acute myocardial infarction
Jin-Ho Choi, Dahee Hyun, Seung Ho Hur, Seung Woon Rha, Seung Jae Joo, Hyo-Soo Kim, Myung Ho Jeong; on behalf of KAMIR-NIH investigators
Korean J Intern Med. 2025;40(5):780-789. Published online August 29, 2025
Background/Aims: While the clinical effectiveness of guideline-directed medical therapy (GDMT) is well established in patients with acute myocardial infarction (AMI), its specific impact on cause-specific mortality remains unclear. This study aimed to investigate the impact of GDMT on both cardiac a..
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Pulmonology / Review
Diagnostic approach for incidental pulmonary nodules
SeungYong Park, Seoung Ju Park
Korean J Intern Med. 2025;40(5):710-724. Published online August 26, 2025
Lung cancer remains a leading cause of cancer-related mortality worldwide and is often diagnosed at an advanced stage, with poor survival outcomes. Early detection and appropriate management of incidental pulmonary nodules, frequently identified through low-dose computed tomography screening, are cr..
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Gastroenterology / Original Article
Impact of body mass index on clinical outcomes in intestinal Behçet’s disease
Daye Park, Jihye Park, Soo Jung Park, Jae Jun Park, Tae Il Kim, Jae Hee Cheon
Korean J Intern Med. 2025;40(4):606-615. Published online July 1, 2025
Background/Aims: The impact of body mass index (BMI) on the clinical outcomes of intestinal Behçet’s disease (BD) remains unclear. This study assessed the association between BMI and disease progression.
Methods: A retrospective analysis of 760 patients with intestinal BD was conducted. Patients were..
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Gastroenterology / Original Article
Submucosal saline injection and mini-probe endoscopic ultrasound to assess endoscopic resectability of colorectal subepithelial tumors
Jung-Bin Park, Ji Eun Baek, June Hwa Bae, Seung Wook Hong, Sung Wook Hwang, Sang Hyoung Park, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Suk-Kyun Yang, Dong-Hoon Yang
Korean J Intern Med. 2025;40(4):592-605. Published online July 1, 2025
Background/Aims: This study aimed to evaluate the feasibility and outcomes of mini-probe endoscopic ultrasound (mEUS) followed by submucosal saline injection (SSI-mEUS) for assessing the endoscopic resectability of colorectal subepithelial lesions (SELs).
Methods: From January 2020 to December 2023..
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Gastroenterology / Original Article
Medical disputes involving lower gastrointestinal endoscopies: cases from the Korean Medical Dispute Mediation and Arbitration Agency
Eun Hye Oh, Jeong Eun Shin, Jun Yong Bae, Yoon Suk Lee, Yehyun Park, Yong Hwan Kwon, Chang Nyol Paik, Jun Kyu Lee, Tae Hee Lee
Korean J Intern Med. 2025;40(3):404-426. Published online April 30, 2025
Background/Aims: As the number of lower gastrointestinal endoscopies and high-risk examinees increases, the incidence of adverse events associated with these endoscopies has also increased. Medical disputes and lawsuits related to adverse events are rapidly increasing.
Methods: Medical disputes rel..
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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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Hemato-oncology / Review
Follicular lymphoma: contemporary clinical management with a focus on recent therapeutic advances
Robert Kridel
Korean J Intern Med. 2025;40(3):371-393. Published online February 21, 2025
Follicular lymphoma (FL) is the most common type of indolent lymphoma, and the prognosis is favorable for most patients. However, FL remains generally incurable, and relapse is common. Patients are at risk of developing treatment-resistant lymphoma, particularly when early disease progression occurs..
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Infectious diseases / Original Article
Initial and peak serum levels of Krebs von den Lungen-6 for predicting the prognosis of patients with COVID-19
Geonui Kim, Hyeonwoo Kwon, Sang Hyun Ra, Euijin Chang, Seongman Bae, Jiwon Jung, Min Jae Kim, Yong Pil Chong, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Sung-Han Kim
Korean J Intern Med. 2025;40(2):321-329. Published online February 21, 2025
Background/Aims: Krebs von den Lungen-6 (KL-6) is associated with prognosis in patients with COVID-19. However, there is limited data on the correlation between the prognosis of COVID-19 and varying KL-6 levels at different time points. We investigated the optimal cutoff values of the initial and pe..
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Gastroenterology / Original Article
Characteristics and outcomes of portal vein thrombosis in patients with inflammatory bowel disease in Korea
Ki Jin Kim, Su-Bin Song, Jung-Bin Park, June Hwa Bae, Ji Eun Baek, Ga Hee Kim, Min-Jun Kim, Seung Wook Hong, Sung Wook Hwang, Dong-Hoon Yang, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Suk-Kyun Yang, Chang Sik Yu, Yong-Sik Yoon, Jong-Lyul Lee, Min Hyun Kim, Ho-Su Lee, Sang Hyoung Park
Korean J Intern Med. 2025;40(2):243-250. Published online December 23, 2024
Background/Aims: Portal vein thrombosis (PVT) frequently occurs in patients with inflammatory bowel disease (IBD), particularly when influenced by factors such as abdominal infections, IBD flare-ups, or surgical procedures. The implications of PVT range from immediate issues such as intestinal ische..
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Gastroenterology / Original Article
Clinical outcomes of esophageal squamous cell carcinoma in patients aged over 80 years
Dae Gon Ryu, Cheol Woong Choi, Su Jin Kim, Su Bum Park, Jin Ook Jang, Bong Soo Son
Korean J Intern Med. 2025;40(2):230-242. Published online February 21, 2025
Background/Aims: The clinical outcomes and optimal treatment of esophageal squamous cell carcinoma (ESCC) in elderly patients are unclear. This study aimed to assess the clinical outcomes of ESCC in patients aged ≥ 80 years.
Methods: Medical records of patients diagnosed with ESCC between Decembe..
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Gastroenterology / Review
Role of endoscopic ultrasound in the diagnosis and local ablative therapy of pancreatic neuroendocrine tumors
Yun Je Song, Jun Kyeong Lim, Jun-Ho Choi
Korean J Intern Med. 2025;40(2):170-180. Published online February 25, 2025
Advancements in diagnostic technology have led to the improved detection of pancreatic neuroendocrine tumors (PNETs) and thus to an increase in the number of reported cases. Endoscopic ultrasound (EUS) technology, including in combination with contrast-enhanced harmonic imaging, aids in distinguishi..
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Endocrinology-metabolism / Original Article
Fisher discriminant analysis of multimodal ultrasound in diagnosis of cervical metastatic lymph nodes in papillary thyroid cancer
Yixuan Wang, Yue Han, Fei Li, Yuyang Lin, Bei Wang
Korean J Intern Med. 2025;40(1):103-114. Published online October 29, 2024
Background/Aims: The purpose of this study was to develop a diagnostic model utilizing multimodal ultrasound parameters to aid in the detection of cervical lymph node metastasis in papillary thyroid cancer (PTC) patients.
Methods: The study included 84 suspicious lymph nodes from 69 PTC patients, a..
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Endocrinology-metabolism / Original Article
Dexamethasone synergizes with high-fat diet to increase lipid deposition in adipocytes
Mingli Su, Ying Wang, Zheng Yan, Jia Luo, Jie Yang, Hua Ye, Aiming Liu, Julin Yang
Korean J Intern Med. 2025;40(1):92-102. Published online January 1, 2025
Background/Aims: Dexamethasone (DEX) is a widely used exogenous therapeutic glucocorticoid in clinical settings. Its long-term use leads to many side effects. However, its effect on metabolic disorders in individuals on a high-fat diet (HFD) remains poorly understood.
Methods: In this study, HFD-fe..
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Pulmonology / Original Article
Blood eosinophil count and treatment patterns of chronic obstructive pulmonary disease patients in South Korea using real-world data
Chin Kook Rhee, Yu-Fan Ho, Sumitra Shantakumar, Tim Holbrook, Yein Nam, Kwang‑Ha Yoo
Korean J Intern Med. 2025;40(1):78-91. Published online January 1, 2025
Background/Aims: Chronic obstructive pulmonary disease (COPD) management guidelines have increasingly emphasised the importance of exacerbation prevention, and the role of blood eosinophil count (BEC) as a biomarker for inhaled corticosteroids (ICS) response. This study aimed to describe the distrib..
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Rheumatology / Review
Literature review of non-pharmacological treatment for patients with axial spondyloarthritis
Jina Yeo, Mi Ryoung Seo, Jun Won Park, Yeon-Ah Lee, Ju Ho Lee, Eun Ha Kang, Seon Mi Ji, Han Joo Baek
Korean J Intern Med. 2025;40(1):40-48. Published online May 27, 2024
Axial spondyloarthritis (axSpA) is a chronic inflammatory disorder affecting the sacroiliac joints and axial spine. Along with pharmacotherapy, non-pharmacological interventions for axSpA are crucial and constitute the cornerstone of treatment. Here, we review the evidence for non-pharmacological tr..
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Endocrinology-metabolism / Review
Cancer treatment-induced bone loss
Yong Jun Choi
Korean J Intern Med. 2024;39(5):731-745. Published online March 5, 2024
Cancer treatment-induced bone loss (CTBL) is associated with anti-tumor treatments, including endocrine therapies, chemotherapeutic treatments, radiotherapy, glucocorticoids, and tyrosine kinase inhibitors. Osteoporosis, characterized by the loss of bone mass, can increase the risk of fractures, lea..
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Cardiology / Review
2024 KSoLA consensus on secondary dyslipidemia
Hoyoun Won, Jae Hyun Bae, Hyunjung Lim, Minji Kang, Minjoo Kim, Sang-Hak Lee; on behalf of the Clinical Practice Guidelines Committee, Korean Society of Lipid and Atherosclerosis (KSoLA)
Korean J Intern Med. 2024;39(5):717-730. Published online August 30, 2024
Elevated blood cholesterol and triglyceride levels induced by secondary causes are frequently observed. The identification and appropriate handling of these causes are essential for secondary dyslipidemia treatment. Major secondary causes of hypercholesterolemia and hypertriglyceridemia include an u..
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Rheumatology / Original Article
Impact of socioeconomic status on biologics utilization in rheumatoid arthritis: revealing inequalities and healthcare efficiency
Hye Won Kim, Yeon Ju Lee, You-Jung Ha, Eun Bong Lee, Yun Jong Lee, Eun Ha Kang
Korean J Intern Med. 2024;39(4):668-679. Published online February 29, 2024
Background/Aims: This cross-sectional study aimed to investigate biologics treatment disparities in rheumatoid arthritis (RA) patients based on socioeconomic status (SES).
Methods: Data from the KOrean Observational Study Network for Arthritis (KORONA) database were analyzed to assess various facto..
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