1.Decisional Trade-offs in Localized Prostate Cancer: A Prospective Cross-Sectional Study of Radical Prostatectomy, Radiation Therapy, and Active Surveillance
Hyunho HAN ; Youngdeuk CHOI ; Woong Kyu HAN ; Jihee JUNG ; Ayoung YOO ; Hyunji YOON ; Siyeong LEE ; Changhwa HYUN ; Woong Sub KOOM ; Ik Jae LEE ; Chan Woo WEE ; Jeongmi LEE ; Jae Young JEONG ; Hyung Ho LEE ; Young Ae KIM ; Jung Eun KIM ; Songhee EUN ; Sung Uk LEE ; Jinha JEONG ; Moonsoo RA
Journal of Urologic Oncology 2025;23(2):112-118
Purpose:
To evaluate patient‐reported experiences of 3 primary treatments for localized or locally advanced prostate cancer—radical prostatectomy (RP), radiation therapy (RT), and active surveillance (AS)—based on cross‐sectional data from a prospective registry, and to explore how these findings can inform a structured shared decision making (SDM) framework.
Materials and Methods:
Men with clinical stage cT3aN0M0 or lower were enrolled. Those who underwent RP or RT were surveyed 6–24 months posttreatment; men on AS had 6–60 months of follow‐up. All participants completed the EORTC QLQ‐PR25 (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire - Prostate Cancer Module), capturing urinary, bowel, hormonal, and sexual function. The Kruskal‐Wallis test evaluated group differences, with significance set at p<0.05.
Results:
Among 542 patients, 435 underwent RP, 73 received RT (43% with androgen deprivation therapy), and 34 were on AS. RP patients reported higher rates of urinary incontinence and sexual dysfunction, whereas RT patients had more severe urinary irritative and bowel symptoms. AS generally preserved baseline sexual function but still involved some urinary complaints and anxiety regarding disease progression. These findings underscore the distinct trade‐offs among the 3 management strategies, emphasizing the importance of individualized SDM that accounts for functional priorities and patient values.
Conclusion
Each treatment modality poses unique impacts on quality of life. Incorporating these patient‐reported data into SDM discussions can improve alignment between clinical recommendations and patient preferences, potentially reducing decisional regret and enhancing long‐term outcomes.
2.A Urologist’s Perspective: Initial Experiences With SpaceOAR Hydrogel Insertion for Prostate Cancer Patients
Hyunho HAN ; Ik Jae LEE ; Woong Sub KOOM ; Chan Woo WEE ; Woong Kyu HAN
Journal of Urologic Oncology 2025;23(1):20-29
Purpose:
To evaluate the placement accuracy and learning curve of SpaceOAR hydrogel and gold fiducial marker insertion in Korean prostate cancer patients undergoing carbon ion radiotherapy (CIRT), performed by a single urologist without prior experience.
Materials and Methods:
In this retrospective observational study, 104 prostate cancer patients scheduled for CIRT at Severance Hospital between November 2022 and October 2023 underwent simultaneous SpaceOAR hydrogel insertion and 2 gold fiducial markers placement under transrectal ultrasound guidance. Postprocedural magnetic resonance imaging scans assessed spacer placement accuracy using the SpaceOAR Symmetry Score. Complications were documented and graded according to the Common Terminology Criteria for Adverse Events v5.0. Statistical analyses evaluated the impact of age, prostate volume, and operative time on complication rates and procedural efficiency.
Results:
Spacer placement was successful in all cases, achieving SpaceOAR Symmetry Score of 2.0 or less in 85.58% of the cases. The average operative time for the first 50 cases was 12.70±3.40 minutes, while for the latter 54 cases was 12.50±5.35 minutes, which suggests no significant learnig curve exist. Complications occurred in 25 of patients (24.0%), with constipation (9.6%), weak urinary stream (4.8%) and perianal pain (3.8%) being the most common. Acute urinary retention (grade 2) occurred in 3 patients and was not related to patient age or the presence of benign prostatic hyperplasia. Other complications were rare and mostly mild (grade 1).
Conclusions
SpaceOAR hydrogel insertion with gold fiducial marker placement is a reliable and efficient procedure that can be effectively performed by urologists without prior experience in patients undergoing CIRT. The procedure demonstrates a significant learning curve, with operative efficiency improving over time, supporting its feasibility and potential for widespread adoption.
3.A Randomized Phase III Study of Patients With Advanced Gastric Adenocarcinoma Without Progression After Six Cycles of XELOX (Capecitabine Plus Oxaliplatin) Followed by Capecitabine Maintenance or Clinical Observation
Guk Jin LEE ; Hyunho KIM ; Sung Shim CHO ; Hyung Soon PARK ; Ho Jung AN ; In Sook WOO ; Jae Ho BYUN ; Ji Hyung HONG ; Yoon Ho KO ; Der Sheng SUN ; Hye Sung WON ; Jong Youl JIN ; Ji Chan PARK ; In-Ho KIM ; Sang Young ROH ; Byoung Yong SHIM
Journal of Gastric Cancer 2023;23(2):315-327
Purpose:
Oxaliplatin, a component of the capecitabine plus oxaliplatin (XELOX) regimen, has a more favorable toxicity profile than cisplatin in patients with advanced gastric cancer (GC). However, oxaliplatin can induce sensory neuropathy and cumulative, dose-related toxicities. Thus, the capecitabine maintenance regimen may achieve the maximum treatment effect while reducing the cumulative neurotoxicity of oxaliplatin. This study aimed to compare the survival of patients with advanced GC between capecitabine maintenance and observation after 1st line XELOX chemotherapy.
Materials and Methods:
Sixty-three patients treated with six cycles of XELOX for advanced GC in six hospitals of the Catholic University of Korea were randomized 1:1 to receive capecitabine maintenance or observation. The primary endpoint was progression-free survival (PFS), analyzed using a two-sided log-rank test stratified at a 5% significance level.
Results:
Between 2015 and 2020, 32 and 31 patients were randomized into the maintenance and observation groups, respectively. After randomization, the median number of capecitabine maintenance cycles was 6. The PFS was significantly higher in the maintenance group than the observation group (6.3 vs. 4.1 months, P=0.010). Overall survival was not significantly different between the 2 groups (18.2 vs. 16.5 months, P=0.624). Toxicities, such as hand-foot syndrome, were reported in some maintenance group patients. Maintenance treatment was a significant factor associated with PFS in multivariate analysis (hazard ratio, 0.472; 95% confidence interval, 0.250–0.890; P=0.020).
Conclusions
After 6 cycles of XELOX chemotherapy, capecitabine maintenance significantly prolonged PFS compared with observation, and toxicity was manageable. Maintenance treatment was a significant prognostic factor associated with PFS.
4.Comparison of Allergenic Properties among Commercially Available House Dust Mite Allergen Extracts in Korea
Ji Tae KIM ; Hyunho KIM ; Sung Hyun KIM ; Dong Jun KIM ; Yeji SHIN ; Jung Dong KIM ; Hangyeol SONG ; Seok Woo JANG ; Deug-chan LEE ; Kyung Hee PARK ; Jae-Hyun LEE ; Kyoung Yong JEONG ; Jung-Won PARK
Yonsei Medical Journal 2021;62(1):86-90
Precise allergy diagnosis and effective allergen specific immunotherapy are largely dependent on the quality of allergen extract. A new extract of Dermatophagoides farinae was commercially developed by Prolagen. The allergenic properties of the new extract were compared with those of other commercial products. The allergenic properties of the new extract were compared according to protein concentration, protein profiles, major allergen (Der f 1) contents, and allergenic potency to those for three commercially available extracts imported in Korea (Jubilant HollisterStier Allergy, Lofarma S.p.A., and Stallergenes Greer). Protein concentrations varied up to 2.62-fold (0.404 to 1.057 mg/mL), and Der f 1 contents varied up to 11.3-fold (3.597 to 40.688 μg/mL). Protein profiles of the extracts showed no major discrepancies, although there were some differences in SDS-PAGE band intensities, reflecting protein concentrations. Allergen potency ranged from 37038 to 60491 PAU/mL. The Prolagen product was highest in terms of protein concentration and allergen potency. The Lofarma product displayed Der f 1 content similar to that in Prolagen (19.4 μg/mg vs. 19.3 μg/mg). Endotoxin levels varied 8.9-fold (1020 to 8985 EU/mL). The newly developed house dust mite extract showed equal or better allergenic properties than available commercial extracts. This new product may be useful for better diagnostics and allergen-specific immunotherapeutics.
5.Relationship between the experience of online game genre and high risk of Internet gaming disorder in Korean adolescents
Hyunho HAN ; Hyunsuk JEONG ; Sun-Jin JO ; Hye Jung SON ; Hyeon Woo YIM
Epidemiology and Health 2020;42():e2020016-
OBJECTIVES:
This study examined the association between high risk of Internet gaming disorder (IGD) and online game genres used by adolescents.
METHODS:
The data derived from the baseline data of the Internet user Cohort for Unbiased Recognition of gaming disorder in Early Adolescence. A total 1,532 middle school students who use online games included. The participants reported the names of the online games they used during the past year. Game genres were categorized into role playing games (RPGs), shooting, multiplayer online battle arena (MOBA), simulation, arcade, sports and action games. The risk of IGD was measured using the Internet Gaming Use-Elicited symptom Screen. The relationship between the experience of online game genre and high risk of IGD was analyzed using multiple logistic regression model.
RESULTS:
The game time of a student was longer if he or she had an experience of RPGs, shooting games, MOBA games, simulation games, and action games. The direct and independent association between high risk of IGD in adolescents and the genres of RPGs, simulation games and MOBA were found to be odds ratios 1.52 (95% confidence interval [CI], 1.03 to 2.26); 1.59 (95% CI, 1.03 to 2.45); and 1.51 (95% CI, 1.03 to 2.21), respectively after adjusted the potential confounding variables and the use of other online game genres.
CONCLUSIONS
The present cross-sectional study has found an association between online game genres and the risk of IGD in adolescents attending a school. A cohort study should verify the causal association in future.
6.Relationship between the experience of online game genre and high risk of Internet gaming disorder in Korean adolescents
Hyunho HAN ; Hyunsuk JEONG ; Sun-Jin JO ; Hye Jung SON ; Hyeon Woo YIM
Epidemiology and Health 2020;42():e2020016-
OBJECTIVES:
This study examined the association between high risk of Internet gaming disorder (IGD) and online game genres used by adolescents.
METHODS:
The data derived from the baseline data of the Internet user Cohort for Unbiased Recognition of gaming disorder in Early Adolescence. A total 1,532 middle school students who use online games included. The participants reported the names of the online games they used during the past year. Game genres were categorized into role playing games (RPGs), shooting, multiplayer online battle arena (MOBA), simulation, arcade, sports and action games. The risk of IGD was measured using the Internet Gaming Use-Elicited symptom Screen. The relationship between the experience of online game genre and high risk of IGD was analyzed using multiple logistic regression model.
RESULTS:
The game time of a student was longer if he or she had an experience of RPGs, shooting games, MOBA games, simulation games, and action games. The direct and independent association between high risk of IGD in adolescents and the genres of RPGs, simulation games and MOBA were found to be odds ratios 1.52 (95% confidence interval [CI], 1.03 to 2.26); 1.59 (95% CI, 1.03 to 2.45); and 1.51 (95% CI, 1.03 to 2.21), respectively after adjusted the potential confounding variables and the use of other online game genres.
CONCLUSIONS
The present cross-sectional study has found an association between online game genres and the risk of IGD in adolescents attending a school. A cohort study should verify the causal association in future.
7.Use of methylene blue in vasoplegic syndrome that developed during non-cardiac surgery: A case report
In Duk OH ; Eunsil SHIN ; Jong Mi JEON ; Hyunho WOO ; Jeong Hyun CHOI
Anesthesia and Pain Medicine 2019;14(4):460-464
BACKGROUND: Vasoplegic syndrome is an increasingly recognized disease in perioperative medicine and is characterized by severe hypotension, normal or elevated cardiac output, and decreased systemic vascular resistance. It occurs commonly after cardiopulmonary bypass but may also occur after other types of surgery.CASE: Vasoplegic syndrome developed in our patient during posterior lumbar interbody fusion because of administering nicardipine after phenylephrine. However, the blood pressure did not increase as expected despite simultaneous use of norepinephrine and vasopressin to increase the reduced systemic vascular resistance.CONCLUSIONS: We present a case of vasoplegic syndrome that developed during posterior lumbar interbody fusion and was treated successfully with methylene blue.
Blood Pressure
;
Cardiac Output
;
Cardiopulmonary Bypass
;
Humans
;
Hypotension
;
Methylene Blue
;
Nicardipine
;
Norepinephrine
;
Phenylephrine
;
Vascular Resistance
;
Vasoplegia
;
Vasopressins
8.Impact of Middle East respiratory syndrome outbreak on the use of emergency medical resources in febrile patients.
Hyunho JEONG ; Sikyoung JEONG ; Juseok OH ; Seon Hee WOO ; Byung Hak SO ; Jeong Hee WEE ; Ji Hoon KIM ; Ji Yong IM ; Seung Pill CHOI ; Kyoungnam PARK ; Byul Nim Hee CHO ; Sungyoup HONG
Clinical and Experimental Emergency Medicine 2017;4(2):94-101
OBJECTIVE: Outbreaks of transmissible respiratory infection are suspected to have significant effects on the health of pediatric and geriatric patients. The objective was to assess the impact of the Middle East respiratory syndrome (MERS) outbreak on the use of emergency resources. METHODS: An ecologic analysis of emergency department (ED) records between September and December 2015, was performed. Data was obtained from the National Emergency Department Information System database for Korea. All demographic and diagnostic data from patients presenting with febrile symptoms as a main complaint were collected. The data were compared to the equivalent period in the three years preceding the MERS outbreak in Korea. RESULTS: Following the MERS outbreak, there was an increase in overall ED visits by febrile patients and the proportion of visits by febrile patients, relative to total ED attendances. This effect was more prominent in the children under five years. The duration of the chief complaint before ED arrival and the length of ED stay were significantly increased among younger pediatric patients. Decreased body temperature on arrival was observed in younger pediatric patients. CONCLUSION: MERS outbreak appears to have had a significant effects on ED use by febrile patients. The use of emergency care services by pediatric patients makes them more vulnerable to an outbreak of a transmissable disease. An effective strategy to control emergency center visits by non-urgent febrile patients and provide proper medical services is urgently needed.
Body Temperature
;
Child
;
Coronavirus Infections*
;
Disease Outbreaks
;
Emergencies*
;
Emergency Medical Services
;
Emergency Service, Hospital
;
Fever
;
Humans
;
Information Systems
;
Korea
;
Middle East Respiratory Syndrome Coronavirus
;
Middle East*
;
Overall
9.Massive Pulmonary Thromboembolism Treated with Heparin and Extracorporeal Membrane Oxygenation During Cardiogenic Shock.
Gihyeon WOO ; Gee Hee KIM ; Ki Dong YOO ; Ilkyu KIM ; Hyunho KIM ; Dong Hwi KIM
Journal of the Korean Society of Emergency Medicine 2013;24(5):622-626
A 48-year-old woman visited the emergency department, complaining of syncope and chest pain. Her initial vital signs were unstable and her blood pressure was manually uncheckable. Despite inotropics and fluid replacement, the patient collapsed and required cardiopulmonary resuscitation (CPR). During the first CPR, emergent echocardiography revealed severe right ventricular dysfunction. Under clinical suspicion of massive pulmonary thromboembolism (PTE), heparin was administered and extracorporeal membrane oxygenation (ECMO) implanted by the femoral vessels during resuscitation. ECMO was removed on the third hospital day and the patient was discharged under a tolerable state. We report the survival of a patient from massive PTE by treatment with heparin therapy and ECMO.
Blood Pressure
;
Cardiopulmonary Resuscitation
;
Chest Pain
;
Echocardiography
;
Emergencies
;
Extracorporeal Membrane Oxygenation*
;
Female
;
Heparin*
;
Humans
;
Middle Aged
;
Pulmonary Embolism*
;
Resuscitation
;
Shock, Cardiogenic*
;
Syncope
;
Ventricular Dysfunction, Right
;
Vital Signs
10.MCP-1 and RANTES Polymorphisms in Korean Diabetic End-Stage Renal Disease.
Kwon Wook JOO ; Young Hwan HWANG ; Jae Hyeon KIM ; Kook Hwan OH ; Hyunho KIM ; Hyoung Doo SHIN ; Woo Kyung CHUNG ; Jaeseok YANG ; Kyong Soo PARK ; Curie AHN
Journal of Korean Medical Science 2007;22(4):611-615
Macrophage infiltration has been observed in the renal biopsy specimens of diabetic nephropathy (DN), and hyperglycemic state stimulates the renal expression of RANTES (regulated upon activation, normal T-cell expressed and secreted) and MCP-1 (monocyte chemoattractant protein-1). Upregulation of RANTES and MCP-1 with infiltrating macrophages may play a crucial role in the development and progression of DN. Genetic polymorphisms of RANTES and its receptors were reported to be independent risk factors for DN. We genotyped single nucleotide polymorphism (SNPs) in the MCP-1 G-2518A, CCR2 G46295A, RANTES C-28G and G-403A in 177 diabetic end-stage renal disease (ESRD) patients and 184 patients without renal involvement (controls) in order to investigate the effects of these SNPs on DN in Korean patients with type 2 DM. There were no differences in the frequencies of SNPs and the distribution of haplotypes of RANTES promoter SNPs between two groups. In conclusion, there were no associations of MCP-1, CCR2 and RANTES promoter SNPs with diabetic ESRD in Korean population. Prospective studies with clearly-defined, homogenous cohorts are needed to confirm the effect of these genetic polymorphisms on DN.
Aged
;
Asian Continental Ancestry Group/*genetics
;
Chemokine CCL2/*genetics
;
Chemokine CCL5/*genetics
;
Chi-Square Distribution
;
Diabetes Mellitus, Type 2/complications
;
Female
;
Gene Frequency
;
Genotype
;
Haplotypes
;
Humans
;
Kidney Failure, Chronic/ethnology/etiology/*genetics
;
Korea
;
Male
;
Middle Aged
;
*Polymorphism, Single Nucleotide
;
Promoter Regions, Genetic

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