1.Transcatheter Arterial Embolization for the Control of Neoplastic Hemorrhage in Locally Advanced Breast Cancer: A Case Report
Ji Hwan KANG ; Myung Sub KIM ; Hyun Pyo HONG ; Do Yeon AHN
Journal of the Korean Society of Radiology 2025;86(1):180-184
Intractable bleeding from locally advanced breast carcinoma is a rare but challenging clinical problem. Given the patients’ poor overall condition and palliative care status, management options are often limited. Transcatheter arterial embolization (TAE) emerges as a potential alternative to traditional surgical or radiation-based approaches for hemorrhage control. This case report presents a successful application of TAE in managing spontaneous bleeding from a locally advanced breast cancer.
2.Transcatheter Arterial Embolization for the Control of Neoplastic Hemorrhage in Locally Advanced Breast Cancer: A Case Report
Ji Hwan KANG ; Myung Sub KIM ; Hyun Pyo HONG ; Do Yeon AHN
Journal of the Korean Society of Radiology 2025;86(1):180-184
Intractable bleeding from locally advanced breast carcinoma is a rare but challenging clinical problem. Given the patients’ poor overall condition and palliative care status, management options are often limited. Transcatheter arterial embolization (TAE) emerges as a potential alternative to traditional surgical or radiation-based approaches for hemorrhage control. This case report presents a successful application of TAE in managing spontaneous bleeding from a locally advanced breast cancer.
3.Transcatheter Arterial Embolization for the Control of Neoplastic Hemorrhage in Locally Advanced Breast Cancer: A Case Report
Ji Hwan KANG ; Myung Sub KIM ; Hyun Pyo HONG ; Do Yeon AHN
Journal of the Korean Society of Radiology 2025;86(1):180-184
Intractable bleeding from locally advanced breast carcinoma is a rare but challenging clinical problem. Given the patients’ poor overall condition and palliative care status, management options are often limited. Transcatheter arterial embolization (TAE) emerges as a potential alternative to traditional surgical or radiation-based approaches for hemorrhage control. This case report presents a successful application of TAE in managing spontaneous bleeding from a locally advanced breast cancer.
4.The efficacy of hyperbaric oxygen therapy for skin perfusion following peripheral tissue injury due to usage of inotropes and vasopressors: a case report
Nien Hsiu SUEN ; Chang Hae PYO ; Hyun Kyung PARK ; Keun Hong PARK ; Dongsun CHOI
Clinical and Experimental Emergency Medicine 2024;11(4):387-391
Hyperbaric oxygen therapy (HBOT) has garnered significant attention as a therapeutic modality with potential benefits across a variety of medical conditions, ranging from wound healing and ischemic conditions to neurologic disorders and radiation-induced tissue damage. HBOT involves the administration of 100% oxygen at higher-than-atmospheric pressures, which increases the amount of oxygen dissolved in body fluids and tissues. Those elevated oxygen levels are proposed to facilitate tissue repair, reduce inflammation, and promote angiogenesis. This case report presents a compelling instance of the usefulness of HBOT in promoting skin perfusion and healing following peripheral tissue injury caused by administration of inotropic and vasopressor agents to a septic shock patient.
5.Dual-dispatch protocols and return of spontaneous circulation in patients with out-of-hospital cardiac arrest: a nationwide observational study
Seung Hyo LEE ; Won Pyo HONG ; Young Su KIM ; Jeseong PARK ; Hyouk Jae LIM
Clinical and Experimental Emergency Medicine 2024;11(3):276-285
Objective:
The Korean National Fire Agency conducted a pilot project examining Advanced Life Support (ALS) protocols, including epinephrine administration, to improve survival among patients suffering out-of-hospital cardiac arrest (OHCA). In this study, we aimed to evaluate the effects of the Korean National Fire Agency ALS protocol on prehospital return of spontaneous circulation (ROSC) in patients with OHCA.
Methods:
This study included patients with adult-presumed cardiac arrest between January and December 2020. The main factor of interest was ambulance type according to ALS protocol, which was divided into dedicated ALS ambulance (DA), smartphone-based ALS ambulance (SALS), and non-DA, and the main analysis factor was prehospital ROSC. Multivariate logistic regression analysis was performed.
Results:
During the study period, a total of 18,031 adult patients with OHCA was treated by the emergency medical services, including 7,520 DAs (41.71%), 2,622 SALSs (14.54%), and 7,889 non-DAs (43.75%). The prehospital ROSC ratio was 13.19% for DA, 11.17% for SALS, and 7.91% for non-DA (P<0.01). Compared with that of the DA group, the odds ratios (95% confidence interval) for prehospital ROSC ratio were 0.97 (0.82–1.15) in the SALS group and 0.57 (0.50–0.65) in the non-DA group. The prehospital ROSC ratio of the DA group was higher than those of the non-DA group and the SALS group.
Conclusion
ALS protocol intervention was associated with prehospital ROSC rates. Therefore, continuous efforts to promote systemic implementation of the ALS protocol to improve OHCA outcomes are necessary.
6.Short-term exposure to di(2-ethylhexyl)phthalate may disrupt hepatic lipid metabolism through modulating the oxidative stress in male adolescent rats
Eui-Jin LEE ; Yeon-Pyo HONG ; Yun-Jung YANG
Environmental Analysis Health and Toxicology 2024;39(1):e2024007-
Di(2-ethylhexyl)phthalate (DEHP) is commonly used to increase the flexibility of plastics. In our previous study, DEHP may increase hepatic lipid accumulation through modulating of acyl-CoA:diacylglycerol acyltransferase 1 (DGAT1) expression. Nevertheless, it is hard to understand the association between DEHP and DGAT1 in the liver because only one dosage of DEHP was used. Thus, this study performed to investigate the role of DGAT1 on hepatic lipid metabolism after various dosages of DEHP exposure. Four-week-old male Sprague-Dawley rats (n = 5/group) were administered corn oil (vehicle) or DEHP (0.75, 7.5, 15, or 150 mg/kg/day) once daily for seven days. DEHP 150 mg/kg/day treated group increased body weight gain and relative liver weight compared to the control (P = 0.044 and P = 0.049, respectively). In histological observation, elevation of hepatic lipid accumulation was observed in all DEHP-treated groups, except DEHP 150 mg/kg/day, compared to that in the control (all P < 0.001). Portal inflammatory infiltration and acidophilic bodies were observed in the liver at DEHP 7.5 mg/kg/day and above treated groups. In addition, malondiadehyde levels, a marker of lipid peroxidation, in the liver were increased in DEHP 7.5, 15 and 150 mg/kg/day compared to the control (P = 0.017, P = 0.001, and P = 0.002, respectively). The expression of Dgat1 in the liver was significantly increased in DEHP 7.5, 15 and 150 mg/kg/day compared to the control group (P = 0.019, P = 0.002, and P < 0.001, respectively); however, there were no significant changes in the protein levels. Therefore, excessive oxidative stress caused by DEHP may induce liver damage such as inflammation rather than hepatic lipid accumulation by regulating DGAT1 transcription.
7.Local Ablation for Hepatocellular Carcinoma: 2024 Expert Consensus-Based Practical Recommendations of the Korean Liver Cancer Association
Seungchul HAN ; Pil Soo SUNG ; Soo Young PARK ; Jin Woong KIM ; Hyun Pyo HONG ; Jung-Hee YOON ; Dong Jin CHUNG ; Joon Ho KWON ; Sanghyeok LIM ; Jae Hyun KIM ; Seung Kak SHIN ; Tae Hyung KIM ; Dong Ho LEE ; Jong Young CHOI ; Research Committee of the Korean Liver Cancer Association
Gut and Liver 2024;18(5):789-802
Local ablation for hepatocellular carcinoma, a non-surgical option that directly targets and destroys tumor cells, has advanced significantly since the 1990s. Therapies with different energy sources, such as radiofrequency ablation, microwave ablation, and cryoablation, employ different mechanisms to induce tumor necrosis. The precision, safety, and effectiveness of these therapies have increased with advances in guiding technologies and device improvements.Consequently, local ablation has become the first-line treatment for early-stage hepatocellular carcinoma. The lack of organized evidence and expert opinions regarding patient selection, preprocedure preparation, procedural methods, swift post-treatment evaluation, and follow-up has resulted in clinicians following varied practices. Therefore, an expert consensus-based practical recommendation for local ablation was developed by a group of experts in radiology and hepatology from the Research Committee of the Korean Liver Cancer Association in collaboration with the Korean Society of Image-Guided Tumor Ablation to provide useful information and guidance for performing local ablation and for the pre- and post-treatment management of patients.
8.Blood Pressure Variability and Ocular Vestibular-Evoked Myogenic Potentials Are Independently Associated With Orthostatic Hypotension
Keun-Tae KIM ; Jeong-Heon LEE ; Jun-Pyo HONG ; Jin-Woo PARK ; Sun-Uk LEE ; Euyhyun PARK ; Byung-Jo KIM ; Ji-Soo KIM
Journal of Clinical Neurology 2024;20(6):571-579
Background:
and Purpose We delineated the association between otolithic dysfunction and blood pressure (BP) variability.
Methods:
We prospectively recruited 145 consecutive patients (age=71 [59–79] years, median [interquartile range]; 76 females) with orthostatic intolerance between December 2021 and December 2023 at a tertiary hospital in South Korea. Each patient underwent evaluations of cervical and ocular vestibular-evoked myogenic potentials (oVEMPs), 24-h noninvasive ambulatory BP monitoring (ABPM), and a head-up tilt-table test using the Finometer device. As measures of BP variability, the standard deviations (SDs) of the systolic BP (SBP SD) and the diastolic BP were calculated based on serial ABPM recordings. Patients were divided into those with orthostatic hypotension (OH, n=68) and those with a normal head-up tilt-table test despite orthostatic intolerance (NOI, n=77) groups.
Results:
A multivariable logistic regression analysis showed that OH was associated with bilateral oVEMP abnormalities (p=0.021), SBP SD (p=0.012), and female sex (p=0.004). SBP SD was higher in patients with OH than in those with NOI (p<0.001), and was not correlated with n1–p1 amplitude (p=0.491) or normalized p13–n23 amplitude (p=0.193) in patients with OH.The sensitivity and specificity for differentiating OH from NOI were 72.1% and 67.5%, respectively, at a cutoff value of 12.7 mm Hg for SBP SD, with an area under the receiver operating characteristic curve of 0.73.
Conclusions
Bilaterally deficient oVEMP responses may be associated with OH regardless of 24-h BP variability, reflecting the integrity of the otolith-autonomic reflex during orthostasis. Alternatively, 24-h BP variability is predominantly regulated by the baroreflex, which also participates in securing orthostatic tolerance complementary to the vestibulo-autonomic reflex.
9.Understanding hikikomori syndrome in clinical settings: a case series
Ji Hyun AN ; Sohee PARK ; Jin Young JUNG ; Jin Pyo HONG
Precision and Future Medicine 2024;8(1):28-32
Hikikomori syndrome (HS), a phenomenon characterized by social withdrawal and isolation, has attracted significant attention in both academic and clinical settings. However, understanding the diverse nature of HS remains a challenge due to its multifaceted etiology and presentation. This paper aims to shed light on this phenomenon by examining three representative typologies of HS in clinical settings. Through detailed case analyses, we categorize HS into three main types: HS associated with neurodevelopmental disorders; HS triggered by the onset of mental illness; and HS emerging gradually with age-related challenges. By elucidating these typologies, we provide insights into the complex interplay of psychological, social, and developmental factors contributing to HS, thereby facilitating more tailored approaches for the evaluation of and intervention into this syndrome in clinical practice.
10.Metal Stents for the Management of Massive Hemobilia in Patients with Hilum-Involving Cholangiocarcinoma Receiving MultiRegimen Chemotherapy
Seung Yeon LEE ; Min Je SUNG ; Suk Pyo SHIN ; Hong Jae CHON ; Beodeul KANG ; Kwang Hyun KO ; Mamoru TAKENAKA ; Chang-Il KWON
Gut and Liver 2024;18(6):1085-1089
Recent clinical outcomes of multi-regimen chemotherapy in patients with cholangiocarcinoma (CCC) have shown benefits in terms of overall survival. However, repeated endoscopic biliary drainage (EBD) and serious adverse events negatively affect prolongation of the survival period.The aim of this study was to investigate the prevalence of massive hemobilia and the outcomes of its management with fully covered self-expandable metal stents (FC-SEMSs) in patients with hilum-involving CCC receiving multi-regimen chemotherapy. The methods and effects of FCSEMS placement were retrospectively investigated following the occurrence of massive hemobilia during EBD. A total of 356 patients with CCC received multi-regimen chemotherapy. Among them, 181 patients had hilar invasion, and seven patients (3.9%) developed massive hemobilia during repeated EBD using removable stents. In all cases, the tumor encased the right hepatic artery. In six patients (85.7%), hemostasis was immediately and completely achieved by inserting one or two FC-SEMSs proximal to the hilar invasion area. Therefore, if the tumor encases the right hepatic artery, massive hemobilia is likely to occur during multi-regimen chemotherapy.Thus, prompt placement of a FC-SEMS would be an effective treatment option for massive hemobilia in patients with hilum-involving CCC.

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