1.Current Clinical Perspectives on Rosacea Management: Insights From a Korean Multicenter Expert Opinion Survey
Bo Ri KIM ; Sejin OH ; Ju Hee HAN ; Jimyung SEO ; Hyun-Min SEO ; Soon-Hyo KWON ; Hoon CHOI ; Jung U SHIN ; Jae We CHO ; Boncheol Leo GOO ; Jung-Im NA ; Dong Hun LEE ; Chun Pill CHOI ; HaeWoong LEE ; Joo Yeon KO ; Hwa Jung RYU ; Nark-Kyoung RHO ; Hyunjo KIM ; Ga-Young LEE ; Jong Hee LEE ; Nala SHIN ; Sang Ju LEE ; Suk Bae SEO ; Geun Soo LEE ; Hei Sung KIM ; Chang-Hun HUH
Annals of Dermatology 2026;38(1):42-50
Background:
Rosacea is a chronic inflammatory skin disorder characterized by erythema, papules, ocular symptoms, and heightened sensitivity. Patients with neurogenic symptoms such as burning or stinging remain particularly difficult to manage. Current guidelines often underrepresent energy-based devices (EBDs), pigmentary sequelae, psychosocial burden, and ocular comorbidities.
Objective:
To examine Korean dermatologists’ expert perspectives on rosacea management, focusing on skin sensitivity, neurogenic symptoms, pigmentary changes, psychosocial impact, ocular involvement, and EBD use.
Methods:
A web-based, 29-item survey was administered to 25 board-certified Korean dermatologists (May–June 2025). Quantitative and qualitative responses were analyzed.
Results:
Erythematotelangiectatic and papulopustular phenotypes with sensitivity skin predominated. EBDs (pulsed dye laser, intense pulsed light) were frequently used but limited by cost and sensitivity issues. Neurogenic symptoms were recognized but rarely treated with neuromodulators. Post-inflammatory hyperpigmentation was infrequent, yet monitoring was inconsistent.Psychosocial and ocular aspects were acknowledged but seldomly systematically addressed.Respondents expressed interest in emerging adjunctive treatments such as cold plasma, skin boosters, and holistic care approaches.
Conclusion
Korean dermatologists adopt individualized strategies for rosacea, yet practice gaps remain regarding neurogenic symptoms, pigmentary complications, and psychosocial and ocular comorbidities. Findings support the need for updated multidisciplinary, phenotype-driven guidelines aligned with real-world practice.
2.Global Perspectives on Managing Incidental and Secondary Findings in Genomic Testing:A Comprehensive Review of Policies, Implementation Challenges, and Stakeholder Perspectives
Jisook YIM ; Kyung Sun PARK ; Eul-Ju SEO
Annals of Laboratory Medicine 2026;46(1):16-31
The rapid advancement of genome sequencing has increased the detection of incidental findings (IFs) and secondary findings (SFs), raising complex ethical and practical challenges in both clinical and research settings. This review examines policies, guidelines, and stakeholder perspectives on IF/SF across different jurisdictions, focusing on articles published between 2000 and 2024. We found significant variation in IF/SF reporting practices, reflecting different healthcare systems and ethical frameworks. While the American College of Medical Genetics and Genomics supports proactive SF reporting, European and Canadian policies adopt more conservative approaches. Stakeholder perspectives also varied; patients generally preferred receiving results, whereas healthcare professionals’ support depended on factors including actionability and patient age. Particular challenges emerged in relation to pediatric cases, with ongoing debates about balancing future autonomy with potential medical benefits. Implementation barriers were identified across jurisdictions, including resource constraints, knowledge limitations, and a lack of standardized procedures. Despite consensus on the potential value of IF/SF reporting, inconsistencies in approaches and implementation challenges persist. Current evidence suggests the need for more sophisticated, context-sensitive frameworks that can accommodate different healthcare systems while maintaining consistent ethical standards. Further research is required to understand the long-term effects of different reporting approaches on patients, healthcare systems, and society.
3.Regions of Homozygosity Identified with a Chromosomal Microarray in a Korean Population:Distribution, Frequency, and Clinical Interpretation
Jaeryuk KIM ; Sunghee MIN ; Chang Ahn SEOL ; Eul-Ju SEO
Annals of Laboratory Medicine 2026;46(1):83-93
Background:
Single nucleotide polymorphism-based chromosomal microarray analysis (CMA) can detect regions of homozygosity (ROHs), which may be associated with medical conditions; however, limited ROH data, especially in East Asians, complicates clinical interpretations. We characterized ROH distributions and frequencies in a Korean population using CMA, highlighting clinically relevant findings, including suspected uniparental disomy (UPD), using standardized criteria.
Methods:
We analyzed ROHs in 1,731 individuals who underwent postnatal CMA at a Ko-rean medical center. ROHs ≥ 3 Mb long were detected using the CytoScan Dx platform and Chromosome Analysis Suite Dx. Suspected UPD and consanguinity were assessed per the American College of Medical Genetics and Genomics technical standards.
Results:
We identified 3,962 ROHs, with 76.7% of patients carrying at least one. Common “hotspot” regions included 3p21.31p21.1 (20.3%), 11p11.2 (18.2%), 1q21.1q21.3(17.7%), and 1p33p32.3 (12.0%). Almost all ROHs observed in > 1% of patients had a median size of < 5 Mb. ROH frequencies correlated negatively with chromosomal recombina-tion rates and positively with gene densities. Additionally, 1.2% (N = 21) of patients exhib-ited ROH patterns suggestive of UPD or consanguinity (13 suspected UPDs on imprinted chromosomes, 6 on non-imprinted chromosomes, and 2 consanguinities); 8 of 13 patients with suspected UPD were diagnosed as having imprinting disorders, with no pathogenic copy number variations detected.
Conclusions
Our population-specific ROH data for Koreans improve clinical interpretations by minimizing the risk of overinterpreting benign variants and highlight the value of standardized criteria for reliably detecting UPD and consanguinity and integrating ROH analysis into routine CMA interpretations.
5.Fluoroscopy-Guided Anterior Cervical Epidural Blood Patch for Incidental Durotomy Following Anterior Cervical Discectomy and Fusion
Dong Ju LEE ; Jae Ho KIM ; Chang Il JU ; Jong Hun SEO
Journal of Minimally Invasive Spine Surgery and Technique 2026;11(1):58-64
In patients with ossification of the posterior longitudinal ligament (OPLL), the risk of incidental durotomy (ID) during anterior cervical spine surgery is relatively high. However, the anterior surgical approach is technically demanding because of limited visualization and restricted operative space, which makes direct dural repair difficult. As a result, indirect repair techniques are typically employed, but these approaches can pose significant postoperative management challenges, particularly in cases of symptomatic cerebrospinal fluid (CSF) leakage. A 68-year-old male patient presented with right-sided symptoms involving both the upper and lower extremities. Radiological evaluation revealed C3–4–5 anterolisthesis, OPLL at the C4–5 level, and bilateral foraminal stenosis at C3–4 and C4–5. During anterior cervical discectomy and fusion (ACDF), an ID occurred at the anterior aspect of the C4–5 segment and was managed with primary indirect repair. Approximately 2 weeks postoperatively, the patient developed symptomatic CSF leakage. Under fluoroscopic guidance, a needle was precisely positioned adjacent to the interbody cage at the anterior aspect of the C4–5 segment—the site of the durotomy—to administer a targeted anterior epidural blood patch (EBP). The procedure was completed successfully without complications and resulted in effective resolution of the CSF leak. ID at the anterior aspect of the spinal canal during ACDF may lead to persistent symptoms due to CSF leakage. In such cases, a minimally invasive strategy, such as a targeted anterior EBP performed under fluoroscopic guidance, may represent an effective alternative to surgical re-exploration for symptom resolution.
6.Full-Endoscopic Paraspinal Foraminotomy for Lumbar Foraminal Stenosis
Young Hwan KIM ; Jae Ho KIM ; Pius KIM ; Chang Il JU ; Jong Hun SEO
Journal of Minimally Invasive Spine Surgery and Technique 2026;11(1):169-176
Transforaminal endoscopic lumbar foraminotomy (TELF) is widely performed as a full-endoscopic surgical procedure for the treatment of lumbar foraminal stenosis. The technique involves the use of a small-caliber endoscopic system introduced through Kambin triangle to accomplish the primary surgical steps. However, anatomical barriers are frequently encountered in the lower lumbar segments, particularly at L4–5 and L5–S1, which may limit the feasibility of the transforaminal approach. Although various advanced transforaminal techniques have been developed to overcome these anatomical barriers, these techniques often make the procedure more technically demanding and may prolong operative time. In this video presentation, we report 2 cases in which a full-endoscopic paraspinal lumbar foraminotomy was performed to achieve adequate decompression of the exiting nerve root (ENR) without being constrained by these anatomical limitations. We also outline the procedural details and technical characteristics of this approach. Both patients presented with lumbar foraminal stenosis at the L5–S1 level, where anatomical barriers such as a high iliac crest, large transverse process, and sacral ala were present. A full-endoscopic paraspinal foraminotomy was performed at this level using a large-caliber endoscopic system, allowing sufficient decompression of the ENR and resulting in marked relief of radicular leg pain. We report a surgical procedure for full-endoscopic paraspinal lumbar foraminotomy using a large-caliber endoscopic system that permits the use of instruments of various sizes and configurations. When applied in appropriate clinical scenarios, this technique may facilitate more convenient and expedited decompression of the ENR.
7.Real‑world Application of the International Anorectal Physiology Working Group Standardized Protocol and London Classification: A Multi‑country Cross‑sectional Survey of Anorectal Manometry Practice in Asia
Seon-Young PARK ; Kee Wook JUNG ; Myeongsook SEO ; Han Hee LEE ; Ju Yup LEE ; Soo In CHOI ; Jong Wook KIM ; Chong Il SOHN ; Suck Chei CHOI
Journal of Neurogastroenterology and Motility 2026;32(2):267-275
Background/Aims:
The International Anorectal Physiology Working Group (IAPWG) has proposed a standardized protocol and the London classification to enhance the consistency and diagnostic accuracy of anorectal manometry (ARM). However, real-world adoption in Asian countries has not been systematically assessed. This study aims to evaluate current ARM practices and adherence to the IAPWG protocol across Asian centers.
Methods:
A cross-sectional, 50-item web-based survey was distributed to gastroenterologists and motility specialists practicing in Asian countries.
Results:
Thirty-one centers from 8 countries responded (20 in Korea, 3 in Japan, 2 in Taiwan, 1 in China, and 7 in other countries). High-resolution ARM was used in 80.6% of centers, primarily with solid-state catheters. While all centers performed rest and short squeeze maneuvers, only 58.1% conducted all maneuvers recommended by the IAPWG protocol.Considerable variation was observed in test methodology and interpretation, including definitions of resting pressure, squeeze duration, push maneuver repetition, and rectal balloon volume for rectoanal inhibitory reflex. For balloon expulsion and rectal sensory testing, centers differed in patient positioning, balloon type, inflation methods, and threshold definitions. Only 38.7% of centers reported having institutional normative values for test interpretation, and 64.5% applied the London classification.
Conclusions
Across Asian centers, ARM practice shows marked regional variation and incomplete implementation of the IAPWG standardized protocol and London classification, highlighting persistent gaps in standardization. Strengthening procedural guidance, regionally appropriate normative data, and interpretation criteria through coordinated education and international collaboration is needed to support more consistent and clinically meaningful use of ARM in routine practice.
8.Age Estimation Using Convolutional Neural Networks with Lumbar and Thoracic Spine Images from Postmortem Computed Tomography: A Pilot Study
Ju-Heon LEE ; Jin-Woo KIM ; Kyung-Ryoul KIM ; In-Soo SEO ; Nak-Won LEE ; Chang-Un CHOI ; Hye-Jeong KIM ; Byung-Yoon ROH
Korean Journal of Legal Medicine 2026;50(1):1-8
In forensic medicine, age estimation commonly involves assessing age-related changes in teeth and skeletal structures. Vertebral morphological alterations, such as osteophyte formation, serve as age indicators. Recent studies using deep-learning techniques, such as neural networks, for age estimation from radiographic images have been conducted, reporting significantly higher accuracy than previous studies. This study aimed to estimate age using neural network-based deep-learning techniques applied to computed tomography (CT) cross-sectional images of the spine and evaluate its feasibility. Postmortem CT scans of 214 cadavers with varying decomposition levels were used. Coronal and sagittal cross-sectional images penetrating the center of each vertebral body were extracted for the 11th and 12th thoracic vertebrae and the first to fifth lumbar vertebrae. Using these images, along with the chronological ages of deceased individuals, an age estimation model was developed through regression analysis in PyTorch, employing a convolutional neural networks architecture with five-fold cross-validation. The model achieved a mean absolute error of 5.385 years, root mean squared error of 7.029 years, and coefficient of determination of 0.793. Although the sample size was relatively small, the results suggested the potential applicability of vertebral imagingbased age estimation in the Korean population. Further research using a larger dataset may improve the accuracy and reliability of the model.
9.Cancer Statistics in Korea: Incidence, Mortality, Survival, and Prevalence in 2023
Eun Hye PARK ; Kyu-Won JUNG ; Seo Hyun CHOI ; Nam Ju PARK ; Mee Joo KANG ; E Hwa YUN ; Hye-Jin KIM ; Jeong-Eun KIM ; Kui Son CHOI ; Han-Kwang YANG ;
Cancer Research and Treatment 2026;58(2):349-367
Purpose:
The current study provides national cancer statistics and their secular trends in Korea, including incidence, mortality, survival, and prevalence in 2023, with international comparisons.
Materials and Methods:
Cancer incidence, survival, and prevalence rates were calculated using the Korea National Cancer Incidence Database (1999-2023), with survival follow-up until December 31, 2024. Mortality data were obtained from the Ministry of Data and Statistics, while international comparisons were based on GLOBOCAN data.
Results:
In 2023, 288,613 newly diagnosed cancer cases (age-standardized rate [ASR], 288.6 per 100,000) and 85,271 deaths from cancer (ASR, 64.3 per 100,000) were reported. Among the incident cases, 145,452 (50.4%) were aged 65 years or older. Prostate cancer became the most common cancer among men for the first time. The proportion of localized-stage cancers increased from 45.6% in 2005 to 51.8% in 2023. Korea had the lowest cancer mortality among countries with similar incidence rates and the lowest mortality-to-incidence ratios for stomach, colorectal, and breast cancer. The 5-year relative survival rate (2019-2023) was 73.7% overall and 92.7% for localized-stage cancers. Over 2.73 million prevalent cases were identified in 2023, representing 5.3% of the Korean population.
Conclusion
These findings indicate that Korea’s cancer control efforts have contributed to early detection and improved survival outcomes. As Korea enters a super-aged society in 2025, cancer burden will continue to increase, requiring sustained and adaptive cancer control strategies.
10.Characteristics of elderly patients complaining of general weakness in emergency department
Hyung-Woo SEO ; Chong-Myeong KIM ; Hyoung-Ju LEE ; Kyung-Wook KIM ; Dae Sik MOON
Journal of the Korean Society of Emergency Medicine 2026;37(1):47-53
Objective:
General weakness is a common symptom in elderly patients (≥65 years), but it is difficult to evaluate. This study focused on the characteristics of elderly patients presenting to the emergency department (ED) with general weakness after the coronavirus disease 2019 (COVID-19) pandemic.
Methods:
A retrospective study was conducted to analyze the medical records of 308 elderly patients (≥65 years) who visited the ED from June 2023 to November 2023. This study examined whether factors, including nursing facilities, economic status, and neurodegenerative diseases (NDDs), have different influences on the characteristics of general weakness and performed tests.
Results:
Poor oral intake and nonspecific weakness accounted for the majority of accompanying symptoms. The symptoms, diagnosis, admission, and the number of imaging tests were similar regardless of the nursing facilities or home, NDDs, or economic status. Infections other than COVID-19 accounted for 31.2%, with pneumonia and urinary tract infections being the most common. COVID-19 accounted for 10.7%. Brain imaging tests, including computed tomography (CT) and magnetic resonance imaging, were performed within 39.9% of patients. Chest or abdominal CT was performed in 45.8% of patients. The infection rate, except for COVID-19, was higher in patients from nursing facilities, while the COVID-19 rate in the two groups was similar (P=0.005). A more aggressive brain imaging test was conducted in patients with NDDs (P=0.04).
Conclusion
After the COVID-19 pandemic, infections other than COVID-19, especially pneumonia and urinary tract infection, were the most common medical causes of general weakness in the elderly, followed by COVID-19. The proportion of COVID-19 as a cause of general weakness was similar between groups.

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