1.Association between initial mental health status and glycemic control in pediatric diabetes
Jeongho HAN ; Mi YANG ; Hakyung LEE ; Dong Jun HA ; Hwa Young KIM ; Hee Jeong YOO ; Jae Hyun HAN ; Jaehyun KIM
Annals of Pediatric Endocrinology & Metabolism 2026;31(2):101-109
Purpose:
Psychiatric conditions are common in children and adolescents with diabetes and can hinder disease management. In this study, we examined whether mental health status at diagnosis predicts glycemic control at 1 year.
Methods:
We included 57 patients aged 6–18 years diagnosed with type 1 or type 2 diabetes between 2019 and 2023 at Seoul National University Bundang Hospital. Mental health was assessed within 3 months of diagnosis using the Eating Disorder Inventory-2, Children’s Depression Inventory, and Child Behavior Checklist (CBCL) for ages 6–18. Poor glycemic control was defined as glycated hemoglobin >6.5% at 1 year. Associations between screening results and glycemic control were analyzed using Fisher exact test and multivariate logistic regression.
Results:
Of the 57 patients, 32 (56.1%) had type 1 diabetes, and the mean age at diagnosis was 12.9±3.1 years; 31 (54.4%) were male. Poor glycemic control at 1 year was observed in 16 patients (28.1%). Although individual subscale positivity was not significantly associated with glycemic control, borderline somatic complaints on the CBCL were significantly associated with poor control (p=0.022). In multivariate analysis, having 2 or more positive CBCL subscales showed a trend toward association with poor glycemic control (adjusted odds ratio=21.47, p=0.054).
Conclusion
Early psychological screening, especially for somatic symptoms or multiple psychological problems, may help identify those at risk for poor glycemic control in pediatric diabetes. These findings underscore the importance of early detection and intervention in optimizing diabetes management.
2.Primary care education in Korean medical and nursing schools: current status, perceptions, and educational needs
Songrim KIM ; Yul Ha MIN ; Jun YIM ; So Jung YUNE ; Kwi Hwa PARK
Korean Journal of Medical Education 2026;38(1):44-53
Purpose:
This study examined the current status, perceptions, and educational needs of primary care education in medical and nursing schools to provide foundational data that can inform effective curriculum development.
Methods:
In total, 40 medical and 64 nursing schools were eligible for this study. Data were collected through an online survey using Google Forms, developed by the research team, from November 2024 to January 2025. Frequency analysis and independent t-tests were performed to compare perceptions on primary care education between the two schools types. Borich Needs Assessment and Locus-for-Focus model were used to identify and prioritize educational needs.
Results:
Responses from 21 medical and 24 nursing schools were analyzed. All medical schools primarily offered education in primary care clinics (100%), whereas most nursing schools offered it in community healthcare institutions (87.5%). Visits and observations were the most common educational methods (>80%). Reports, presentations, and discussions were the most used assessment methods (>60%). Multidisciplinary team-based practicums were limited in both medical (9.5%) and nursing (25.0%) schools. Both groups rated the need to expand primary care education and multidisciplinary team approach highly (>4.4/5). “Longitudinality” and “generalism” were educational priority needs across both groups, whereas other elements showed variations.
Conclusion
This study identified the shared and distinct aspects of primary care education across schools. The findings highlight the importance of enhancing and tailoring primary care education to each school’s specific context and needs, while fostering interprofessional collaboration to strengthen community-based healthcare.
3.Optimal use and cycling strategies of Janus kinase inhibitors in ulcerative colitis: current evidence and clinical implications from the KASID Guidelines Task Force Team
Seung Min HONG ; Dong Hyun KIM ; June Hwa BAE ; Seung Yong SHIN ; Eun Mi SONG ; Ji Eun KIM ; Young Joo YANG ; Jiyoung YOON ; Sang-Bum KANG ; Eun Soo KIM ; Seong-Eun KIM ; Seong-Jung KIM ; Jun LEE ; Soo-Young NA ; Soo Jung PARK ; Sang Hyoung PARK ; Miyoung CHOI ; Myung Ha KIM ; Won MOON ; Sung-Ae JUNG ;
Intestinal Research 2026;24(1):27-37
Janus kinase (JAK) inhibitors are an important treatment option for ulcerative colitis, providing rapid onset of action, oral administration, and efficacy even after biologic failure. The 3 approved agents—tofacitinib, filgotinib, and upadacitinib—differ in JAK isoform selectivity, leading to clinically meaningful differences in efficacy and safety. Evidence from network meta-analyses, clinical trials, and real-world studies consistently shows that upadacitinib provides the highest efficacy for induction and maintenance of remission, whereas filgotinib demonstrates the most favorable safety profile. The strong efficacy of upadacitinib and tofacitinib is particularly relevant in patients with severe disease, including acute severe ulcerative colitis, and upadacitinib maintains high efficacy regardless of prior advanced therapy exposure. JAK inhibitors also benefit extraintestinal manifestations. Although risks such as herpes zoster, serious infection, thromboembolism, and major cardiovascular events differ among agents, long-term data suggest generally acceptable safety when used appropriately. Intraclass JAK-to-JAK cycling is feasible, with about half of patients achieving steroid-free clinical remission in retrospective cohorts. Based on mechanistic, clinical, and real-world evidence, filgotinib may be a first-line option for patients with lower disease activity or when safety is a priority, whereas upadacitinib or tofacitinib may be preferred in higher disease activity. Strategically selecting agents may improve durability and outcomes.
4.Effect of Induced Hypertension Therapy According to the Mechanism of Single Subcortical Infarction
Seung Taek OH ; Jun Young CHANG ; Dong-Wha KANG ; Sun U. KWON ; Sang Hee HA ; Bum Joon KIM
Journal of Clinical Neurology 2026;22(2):153-159
Background:
and Purpose Induced hypertension therapy (IHT) is effective for treating early neurological deterioration (END) in patients with single subcortical infarction (SSI). However, the underlying pathophysiology of SSI is diverse and may affect the efficacy of IHT.
Methods:
We reviewed patients with SSI who experienced END and received IHT were enrolled. END was defined as ≥2-point increase in the National Institutes of Health Stroke Scale (NIHSS) score, ≥1 motor point increase. IHT was performed by using phenylephrine infusion to raise systolic blood pressure by 10%–20% over baseline. SSI was classified into three subtypes: distal (dSSI), proximal (pSSI), and SSI with parental artery disease (SSIPAD; with stenosis at parental artery disease <50%). Responders were defined as patients who showed neurological improvement (decrease of ≥2 points in NIHSS, ≥1 motor point decrease) within one day after IHT initiation. Multivariable analysis identified factors associated with responders.
Results:
Characteristics were compared between responders and non-responders, and factors associated with response to IHT were investigated. Among 96 patients (mean age, 64.7± 12.9 years; 61.5% male), 49 (51.0%) patients were categorized as responders. Multivariable analysis showed that pSSI (adjusted odds ratio [aOR]=18.10, 95% confidence interval [CI] 5.04–80.60, p<0.001) and SSIPAD (aOR=4.56, 95% CI 1.31–19.00, p=0.024) were associated with a positive response to IHT compared to dSSI. Additionally, less white matter changes (Fazekas scale 0–1) were associated with a better response to IHT (aOR=0.15, 95% CI 0.03–0.67,p=0.019).
Conclusions
Response to IHT varied according to SSI subtypes and the severity of small vessel changes.
5.Comprehensive Characterization of Spastic Paraplegia in Korean Patients: A Single-Center Experience over Two Decades
Yunjung CHOI ; Soo-Hyun KIM ; Sung Jun AHN ; Eun Kyoung OH ; Jeong Hee CHO ; Ha Young SHIN ; Seung Woo KIM ; Young-Chul CHOI ; Hyung Jun PARK
Yonsei Medical Journal 2026;67(1):34-41
Purpose:
Hereditary spastic paraplegia (HSP) refers to a group of genetic neurodegenerative diseases marked by gradually worsening spasticity and hyperreflexia in the lower extremities. This study aimed to describe the clinical and genetic characteristics of Korean patients with spastic paraplegia.
Materials and Methods:
We retrospectively reviewed medical records of 69 patients with spastic paraplegia from 54 unrelated families between 2002 and 2024. Genetic, clinical, electrophysiological, and radiological features were comprehensively analyzed.
Results:
Causative genes were identified in 34 (63%) of 54 unrelated families; SPAST, detected in 26 families, was the most prevalent. Seven novel pathogenic variants were identified. Clinically, the median age of symptom onset was 25 years [14.0–37.0]. Out of 69 patients with spastic paraplegia, 51 (74%) presented with the pure form of spastic paraplegia, which included all patients with SPG4. Spastic gait was a universal feature in all patients. Urinary dysfunction was present in 42 (61%) patients. Additional neurologic manifestations included peripheral neuropathy 9 (13%), cognitive impairment 5 (7%), upper limb weakness 4 (6%), dysarthria 4 (6%), dysphagia 3 (4%), ataxia 3 (4%), and scoliosis 1 (3%). Brain MRI findings demonstrated a thin corpus callosum in two patients with SPG11; all patients with SPG4 had normal findings. Spine MRI revealed spinal cord atrophy in 16 (27%) patients, including 6 (21%) patients with SPG4.
Conclusion
The study comprehensively reviewed genetic and clinical spectra of spastic paraplegia in Korean patients, emphasizing the predominance of SPAST as the causative gene and underscoring the genetic and phenotypic heterogeneity of spastic paraplegia.
6.Cross-Calibration of Bone Mineral Density and Body Composition between GE Lunar Prodigy and Hologic Horizon W Dual Energy X-Ray Absorptiometry Systems
Sujin KIM ; Guen Young LEE ; Jun-Il YOO ; Sang-Wook LEE ; Yong-Chan HA
Journal of Bone Metabolism 2026;33(1):84-93
Background:
Dual energy X-ray absorptiometry (DXA) measurements vary among instruments from different manufacturers. This study aimed to assess the correlation between bone mineral density (BMD) and body composition measured by the GE Lunar Prodigy and Hologic Horizon W DXA systems and to develop conversion equations.
Methods:
A total of 120 healthy volunteers (59 males, 61 females) aged 20 to 70 years were scanned on both DXA systems on the same day. BMD was measured at the lumbar spine (L1-L4) and bilateral femurs. Body composition parameters were measured for the whole body and regional sites. Bland-Altman analysis, Pearson correlation, and concordance correlation coefficient (CCC) were used to assess agreement. Linear regression was performed to derive conversion equations.
Results:
The Hologic system measured BMD values 14% to 20% lower at the lumbar spine and 8% to 17% lower at femoral sites compared to the GE Lunar system (all P<0.0001). Lean mass values were 4% to 10% lower on the Hologic system. Very strong correlations were observed for both BMD (r=0.944-0.980) and lean mass (r=0.963-0.984). Cross-calibration equations were developed for all measurement sites.
Conclusions
Despite significant systematic differences, there was very high correlation between the two DXA systems. The conversion equations can facilitate comparison of measurements between these systems in clinical practice and research.
7.Postoperative rupture of an artery dissected from a cerebral aneurysm dome following clipping: A rare and fatal complication
Jiwon JUNG ; Young Ha KIM ; Pil Soo KIM ; Jun Kyeung KO
Journal of Cerebrovascular and Endovascular Neurosurgery 2026;28(1):57-63
The adhesion of arteries to aneurysm domes can pose significant technical challenges during surgical clipping. Dissection of these vessels carries a risk of iatrogenic wall damage and subsequent complications. We present the case of a 67-year-old woman with three unruptured intracranial aneurysms. Following successful coil embolization of a right posterior communicating artery aneurysm, surgical clipping was planned for the remaining left middle cerebral artery and anterior choroidal artery aneurysms. Intraoperatively, the M2 inferior division was found to be densely adherent to an aneurysm located at the bifurcation of the M2 superior division. After temporary clipping of the parent artery, careful dissection was performed, and the aneurysm was successfully clipped. Postoperatively, the patient failed to regain consciousness. A computed tomography scan revealed diffuse subarachnoid hemorrhage, and subsequent angiography confirmed active contrast extravasation from the dissected M2 inferior division. The family declined reoperation, and the patient subsequently expired after brain death was declared. This case illustrates that in instances of strong arterial adhesion, extreme caution is warranted during dissection. Even without evident intraoperative bleeding, subtle vessel wall injury can lead to fatal delayed rupture. Meticulous inspection and, when necessary, reinforcement of dissected arterial segments is crucial to prevent such devastating outcomes.
8.Clinical Characteristics and Survival Data of Korean Malignant Melanoma in Situ:A Single-Center Experience with 156 Patients (2008∼2021)
Jin Seon BANG ; Jin Ho KIM ; Do Young PARK ; Seok-Jong LEE ; Nam Gyoung HA ; Dae-Lyong HA ; Yong Hyun JANG ; Weon Ju LEE ; Jun Young KIM
Korean Journal of Dermatology 2026;64(1):10-17
Background:
Although patients with malignant melanoma in situ (MIS) have a high survival rate, a risk of recurrence or upstaging remains. Thus, a comprehensive understanding of its prognosis is essential for optimal patient management.
Objective:
To investigate the clinical characteristics and survival outcomes of Korean patients with MIS.
Methods:
We retrospectively analyzed the medical records and photographs of patients with MIS treated at a single tertiary center between 2008 and 2021. Clinical features, including diagnosis, treatment, recurrence, and mortality, were examined.
Results:
A total of 156 patients with MIS were included, with a mean age of 59.3 years. The most common subtype was acral lentiginous melanoma (80.8%). Delayed diagnosis was associated with subungual MIS (SUMis; p <0.05). Among the subtypes other than SUMis, 77.3% met three or more of the ABCD criteria for melanoma.Hutchinson’s sign was observed in 67.3% of cases of SUMis. Ulceration was present in only two cases (1.3%).Recurrence occurred in nine patients (5.8%), with four (2.6%) experiencing relapse after 5 years. Upstaging was observed in two patients (1.3%) due to intralymphatic or regional nodal metastasis occurring at 19 and 10 months post-treatment. The 5-year and 10-year melanoma-specific/overall survival rates were 100.0/96.9% and 100.0/89.0%, respectively.
Conclusion
Although the survival rates of patients with MIS are high, long-term and close follow-up after treatment is essential because of the possibility of late recurrence and rare instances of intralymphatic or regional nodal metastasis. Additionally, the presence of clinical ulceration is highly suggestive of invasive melanoma.
9.Comparative Efficacy of Ustekinumab and Guselkumab in Improving Itch in Severe Psoriasis Patients
Ji Hoon RYOO ; Nam Gyoung HA ; Han Jin JUNG ; Dae-Lyong HA ; Jun Young KIM ; Weon Ju LEE ; Yong Hyun JANG
Annals of Dermatology 2025;37(3):146-151
Background:
Biologics effectively improve psoriatic skin lesions, but their impact on itch relief remains unclear.
Objective:
To evaluate itch improvement in severe psoriasis patients treated with ustekinumab or guselkumab.
Methods:
This retrospective study analyzed patients with severe psoriasis who completed initial efficacy evaluations after treatment with either biologic. Itch severity was assessed using numerical rating scale (NRS), visual analog scale, and verbal rating scale. NRS improvement was evaluated after three injections.
Results:
Among 108 patients (74 on ustekinumab, 34 on guselkumab), 77 (71.3%) had moderate-to-severe itch (NRS ≥4) at baseline. Of these, 63 (81.8%) achieved an NRS improvement of ≥4 points. Ustekinumab showed greater itch relief compared to guselkumab in NRS (p=0.033). On the other hand, guselkumab showed more reduction for psoriatic skin lesions than ustekinumab in the Psoriasis Area and Severity Index (p=0.040). In the moderate-to-severe itch group, patients with large plaques experienced significantly greater improvement in NRS than those with small plaques (p=0.012).
Conclusion
While guselkumab is generally preferred for psoriatic skin lesions, ustekinumab may provide superior itch relief.
10.Chromosomal Rearrangements in 1,787 Cases of Acute Leukemia in Korea over 15 Years
DongGeun SON ; Ho Cheol JANG ; Young Eun LEE ; Yong Jun CHOI ; Joo Heon PARK ; Ha Jin LIM ; Hyun-Jung CHOI ; Hee Jo BAEK ; Hoon KOOK ; Mihee KIM ; Ga-Young SONG ; Seo-Yeon AHN ; Sung-Hoon JUNG ; Deok-Hwan YANG ; Je-Jung LEE ; Hyeonug-Joon KIM ; Jae-Sook AHN ; Myung-Geun SHIN
Annals of Laboratory Medicine 2025;45(4):391-398
Background:
Chromosomal alterations serve as diagnostic and prognostic markers in acute leukemia. Given the evolving landscape of chromosomal abnormalities in acute leukemia, we previously studied these over two periods. In this study, we investigated the frequency of these abnormalities and clinical trends in acute leukemia in Korea across three time periods.
Methods:
We retrospectively analyzed data from 1,787 patients with acute leukemia (319 children and 1,468 adults) diagnosed between 2006 and 2020. Conventional cytogenetics, FISH, and multiplex quantitative PCR were used for analysis. The patient groups were divided according to the following three study periods: 2006–2009 (I), 2010–2015 (II), and 2016–2020 (III).
Results:
Chromosomal aberrations were detected in 92% of patients. The PML::RARA translocation was the most frequent. Over the 15-yr period, chromosomal aberrations showed minimal changes, with specific fusion transcripts being common among patients.ALL was more prevalent in children than in adults and correlated significantly with the ETV6::RUNX1 and RUNX1::RUNX1T1 aberrations. The incidence of ALL increased during the three periods, with PML::RARA remaining common.
Conclusions
The frequency of chromosomal abnormalities in acute leukemia has changed subtly over time. Notably, the age of onset of adult AML has continuously increased. Our results may help in establishing diagnoses and clinical treatment strategies and developing various molecular diagnostic platforms.

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