1.A Case of Extracranial Anaplastic Meningioma Presenting as a Solitary Scalp Nodule
Seung Soo LEE ; Jeong-Hyun HWANG ; Ho Yun CHUNG ; Man-Hoon HAN ; Mee-Seon KIM ; Jun Young KIM ; Kyung Duck PARK ; Yong Hyun JANG ; Weon Ju LEE ; Seok-Jong LEE ; Dae-Lyong HA
Korean Journal of Dermatology 2024;62(7):407-411
Meningiomas are common intracranial tumors; however, reports on extracranial cutaneous meningiomas are exceedingly rare. A 77-year-old woman visited our hospital with an asymptomatic child fist-sized mass on the scalp.Biopsy results indicated nuclear atypia and mitoses of sarcomatous cells. Brain magnetic resonance imaging revealed a subgaleal mass with strong enhancement. Suspecting sarcoma, wide excision was performed jointly by the departments of plastic surgery and neurosurgery, during which no evidence of cranial invasion was noted. In the surgical specimen, numerous mitoses of sarcomatous cells and poorly formed nests of epithelioid cells were observed. This led to the diagnosis of anaplastic meningioma without intracranial origin. Subsequently, the patient received adjuvant radiotherapy and is currently under close follow-up. Anaplastic meningioma is rare, but early diagnosis is important as it enables timely and appropriate treatment, thus, improving survival rates. Dermatologists should remain vigilant as meningiomas can manifest as cutaneous scalp nodules, and their accurate diagnosis can profoundly impact prognosis.
2.Predictors of recurrent acute myocardial infarction despite successful percutaneous coronary intervention
Sang Hun LEE ; Myung Ho JEONG ; Joon Ho AHN ; Dae Young HYUN ; Kyung Hoon CHO ; Min Chul KIM ; Doo Sun SIM ; Young Joon HONG ; Ju Han KIM ; Youngkeun AHN ; Jin Yong HWANG ; Weon KIM ; Jong Seon PARK ; Chang-Hwan YOON ; Seung Ho HUR ; Sang Rok LEE ; Kwang Soo CHA ;
The Korean Journal of Internal Medicine 2022;37(4):777-785
Background/Aims:
Recurrent acute myocardial infarction (AMI) is an adverse cardiac event in patients with a first AMI. The predictors of recurrent AMI after the first AMI in patients who underwent successful percutaneous coronary intervention (PCI) have not been elucidated.
Methods:
We analyzed the data collected from 9,869 patients (63.2 ± 12.4 years, men:women = 7,446:2,423) who were enrolled in the Korea Acute Myocardial Infarction Registry-National Institute of Health between November 2011 and October 2015, had suffered their first AMI and had received successful PCI during the index hospitalization. Multivariable logistic regression analysis was performed to identify the independent predictors of recurrent AMI following the first AMI.
Results:
The cumulative incidence of recurrent AMI after successful PCI was 3.6% (359/9,869). According to the multivariable logistic regression analysis, the significant predictive factors for recurrent AMI were diabetes mellitus, renal dysfunction, atypical chest pain, and multivessel disease.
Conclusions
In this Korean prospective cohort study, the independent predictors of recurrent AMI after successful PCI for the first AMI were diabetes mellitus, renal dysfunction, atypical chest pain, and multivessel disease.
3.A Comparative Study of an Anti-Thrombotic Small-Diameter Vascular Graft with Commercially Available e-PTFE Graft in a Porcine Carotid Model
Kyo Seon LEE ; Mukhammad KAYUMOV ; Gladys A. EMECHEBE ; Do-Wan KIM ; Hwa-Jin CHO ; Yun-Jin JEONG ; Dong-Weon LEE ; Jun-Kyu PARK ; Chan-Hee PARK ; Cheol-Sang KIM ; Francis O. OBIWELUOZOR ; In-Seok JEONG
Tissue Engineering and Regenerative Medicine 2022;19(3):537-551
BACKGROUND:
We have designed a reinforced drug-loaded vascular graft composed of polycaprolactone (PCL) and polydioxanone (PDO) via a combination of electrospinning/3D printing approaches. To evaluate its potential for clinical application, we compared the in vivo blood compatibility and performance of PCL/PDO ? 10%DY grafts doped with an antithrombotic drug (dipyridamole) with a commercial expanded polytetrafluoroethylene (e-PTFE) graft in a porcine model.
METHODS:
A total of 10 pigs (weight: 25–35 kg) were used in this study. We made a new 5-mm graft with PCL/PDO composite nanofiber via the electrospinning technique. We simultaneously implanted a commercially available e-PTFE graft (n = 5) and our PCL/PDO ? 10%DY graft (n = 5) into the carotid arteries of the pigs. No anticoagulant/antiplatelet agent was administered during the follow-up period, and ultrasonography was performed weekly to confirm the patency of the two grafts in vivo. Four weeks later, we explanted and compared the performance of the two grafts by histological analysis and scanning electron microscopy (SEM).
RESULTS:
No complications, such as sweating on the graft or significant bleeding from the needle hole site, were seen in the PCL/PDO ? 10%DY graft immediately after implantation. Serial ultrasonographic examination and immunohistochemical analysis demonstrated that PCL/PDO ? 10%DY grafts showed normal physiological blood flow and minimal lumen reduction, and pulsed synchronously with the native artery at 4 weeks after implantation. However, all e-PTFE grafts occluded within the study period. The luminal surface of the PCL/PDO ? 10%DY graft in the transitional zone was fully covered with endothelial cells as observed by SEM.
CONCLUSION
The PCL/PDO ? 10%DY graft was well tolerated, and no adverse tissue reaction was observed in porcine carotid models during the short-term follow-up. Colonization of the graft by host endothelial and smooth muscle cells coupled with substantial extracellular matrix production marked the regenerative capability. Thus, this material may be an ideal substitute for vascular reconstruction and bypass surgeries. Long-term observations will be necessary to determine the anti-thrombotic and remodeling potential of this device.
4.Identification of African swine fever virus genomic DNAs in wild boar habitats within outbreak regions in South Korea
Kyung-Lak LEE ; Yongjun CHOI ; Jongchan YOO ; Jusun HWANG ; Hyun-Gi JEONG ; Weon-Hwa JHEONG ; Seon-Hee KIM
Journal of Veterinary Science 2021;22(2):e28-
An African swine fever (ASF) outbreak in wild boars was first reported on October 2, 2019, in South Korea. Since then, additional cases were reported in South Korea's border areas. We here report the identification of ASF virus (ASFV) DNAs from two out of eight environmental abiotic matter samples collected from areas where ASF-positive wild boar carcasses were found. Comparative genomic investigations suggested that the contaminating ASFV DNAs originated from the wild boar whose carcass had been found near the positive sample sites.This is the first report on the identification of ASF viral material in wild boar habitats.
5.Identification of African swine fever virus genomic DNAs in wild boar habitats within outbreak regions in South Korea
Kyung-Lak LEE ; Yongjun CHOI ; Jongchan YOO ; Jusun HWANG ; Hyun-Gi JEONG ; Weon-Hwa JHEONG ; Seon-Hee KIM
Journal of Veterinary Science 2021;22(2):e28-
An African swine fever (ASF) outbreak in wild boars was first reported on October 2, 2019, in South Korea. Since then, additional cases were reported in South Korea's border areas. We here report the identification of ASF virus (ASFV) DNAs from two out of eight environmental abiotic matter samples collected from areas where ASF-positive wild boar carcasses were found. Comparative genomic investigations suggested that the contaminating ASFV DNAs originated from the wild boar whose carcass had been found near the positive sample sites.This is the first report on the identification of ASF viral material in wild boar habitats.
6.Effectiveness and Safety of Biolimus A9™-Eluting stEnt in Patients with AcUTe Coronary sYndrome; A Multicenter, Observational Study (BEAUTY Study)
Keun Ho PARK ; Myung Ho JEONG ; Young Joon HONG ; Youngkeun AHN ; Hyun Kuk KIM ; Young Yub KOH ; Doo Il KIM ; Sang Wook KIM ; Weon KIM ; Seung Woon RHA ; Jay Young RHEW ; Jong Seon PARK ; Hun Sik PARK ; Jang Ho BAE ; Jang Whan BAE ; Seok Kyu OH ; Sung Yun LEE ; Seung Wook LEE ; Jae Hwan LEE ; Sang Yeob LIM ; Jang Hyun CHO ; Kwang Soo CHA ; Jai Keon CHAE ; Seung Ho HUR ; Sun Ho HWANG ; Jin Yong HWANG
Yonsei Medical Journal 2018;59(1):72-79
PURPOSE: This study sought to determine the 1-year clinical effectiveness and safety of a biodegradable, polymer-containing Biolimus A9™-eluting stent (BES) in Korean patients with acute coronary syndrome (ACS). MATERIALS AND METHODS: A total of 1000 ACS patients with 1251 lesions who underwent implantation of BESs at 22 centers in Korea were enrolled between May 2011 and July 2013. We assessed major adverse cardiac events (MACE) defined as the composite of cardiac death, non-fatal myocardial infarction (MI), and clinical-driven target vessel revascularization at 12 months. RESULTS: Patient mean age was 62.6±11.4 years. 72.8% of the patients were male, 28.5% had diabetes, 32.8% had multi-vessel disease (MVD), and 47.9% presented with acute MI (AMI). The mean global registry of acute coronary events risk score of all patients was 103.0±27.6. The number of stents per patient was 1.3±0.6. The incidences of MACE and definite stent thrombosis at 12 months were 3.9% and 0.2%, respectively. On multivariate Cox-regression analysis, age ≥65 years was identified as an independent predictors of 1-year MACE (hazard ratio=2.474; 95% confidence interval=1.202−5.091). Subgroup analyses revealed no significant differences in the incidence of MACE between patients with and without diabetes (4.3% vs. 3.7%, p=0.667), between those who presented with and without AMI (4.4% vs. 3.4%, p=0.403), and between those with and without MVD (4.6% vs. 3.5%, p=0.387). CONCLUSION: Our study demonstrated excellent 1-year clinical outcomes of BES implantation in patients at low-risk for ACS.
Acute Coronary Syndrome/drug therapy
;
Aged
;
Drug-Eluting Stents/adverse effects
;
Female
;
Humans
;
Incidence
;
Kaplan-Meier Estimate
;
Male
;
Middle Aged
;
Multivariate Analysis
;
Proportional Hazards Models
;
Republic of Korea
;
Sirolimus/adverse effects
;
Sirolimus/analogs & derivatives
;
Sirolimus/therapeutic use
;
Time Factors
;
Treatment Outcome
7.Effect of Codonopsis lanceolata with Steamed and Fermented Process on Scopolamine-Induced Memory Impairment in Mice.
Jin Bae WEON ; Bo Ra YUN ; Jiwoo LEE ; Min Rye EOM ; Hyun Jeong KO ; Ji Seon KIM ; Hyeon Yong LEE ; Dong Sik PARK ; Hee Chul CHUNG ; Jae Youn CHUNG ; Choong Je MA
Biomolecules & Therapeutics 2013;21(5):405-410
Codonopsis lanceolata (Campanulaceae) traditionally have been used as a tonic and to treat patients with lung abscesses. Recently, it was proposed that the extract and some compounds isolated from C. lanceolata reversed scopolamine-induced memory and learning deficits. The purpose of this study was to evaluate the improvement of cognitive enhancing effect of C. lanceolata by steam and fermentation process in scopolamine-induced memory impairment mice models by passive avoidance test and Morris water maze test. The extract of C. lanceolata or the extract of steamed and fermented C. lanceolata (SFCE) was orally administered to male mice at the doses of 100 and 300 mg/kg body weight. As a result, mice treated with steamed and fermented C. lanceolata extract (SFCE) (300 mg/kg body weight, p.o.) showed shorter escape latencies than those with C. lanceolata extract or the scopolamine-administered group in Morris water maze test. Also, it exerted longer step-through latency time than scopolamine treated group in passive avoidance test. Furthermore, neuroprotective effect of SFCE on glutamate-induced cytotoxicity was assessed in HT22 cells. Only SFCE-treated cells showed significant protection at 500 microg/ml. Interestingly, steamed C. lanceolata with fermentation contained more phenolic acid including gallic acid and vanillic acid than original C. lanceolata. Collectively, these results suggest that steam and fermentation process of C. lanceolata increased cognitive enhancing activity related to the memory processes and neuroprotective effect than original C. lanceolata.
Animals
;
Body Weight
;
Codonopsis*
;
Fermentation
;
Gallic Acid
;
Humans
;
Learning
;
Lung Abscess
;
Male
;
Maze Learning
;
Memory*
;
Mice*
;
Neuroprotective Agents
;
Phenol
;
Scopolamine Hydrobromide
;
Steam*
;
United Nations
;
Vanillic Acid
8.Predictive Factors after Percutaneous Coronary Intervention in Young Patients with Acute Myocardial Infarction.
Jae Yeong CHO ; Myung Ho JEONG ; Ok Ja CHOI ; Seok LEE ; Seon Young JEONG ; In Soo KIM ; Jung Sun CHO ; Seung Hwan HWANG ; Sun Ho HWANG ; Nam Sik YOON ; Jae Youn MOON ; Young Joon HONG ; Ju Han KIM ; Weon KIM ; Young Keun AHN ; Jeong Gwan CHO ; Jong Chun PARK ; Jung Chaee KANG
Korean Circulation Journal 2007;37(8):373-379
BACKGROUND AND OBJECTIVES: Acute myocardial infarction (AMI) at a young age less than 40 years is an uncommon condition and it is characterized by multiple cardiovascular risk factors. We analyzed the risk factors of restenosis in AMI patients who underwent percutaneous coronary intervention (PCI), and these patients were under the age of 40 years. SUBJECTS AND METHODS: Between January 1997 and December 2006, 88 out of the 121 young AMI patients (mean age: 35.6+/-4.0 years, 115 males) who underwent follow-up coronary angiography after PCI were divided into two groups: the patients without restenosis (group I: n=62, mean age: 35.6+/-3.9 years, 60 males) and the patients with restenosis (group II: n=26, mean age: 36.3+/-3.8 years, 23 males). The clinical and coronary angiographic characteristics were compared between the two groups. RESULTS: Smoking (79.3%) was the most common risk factor in all the patients. The baseline clinical characteristics and baseline laboratory findings were not different between the two groups. There was no significant difference in the sex ratio (p=0.124). The Thrombolysis In Myocardial Infarction (TIMI) flows were not different between the two groups. The level of homocysteine (hcy) was significantly decreased from 12.4+/-8.8 micronmol/L to 9.3+/-3.8 micronmol/L in group I (p=0.011), but this was not changed significantly in group II (p=0.062). According to multiple logistic regression analysis, a high triglyceride level (>200 mg/dL) was an independent predictor of restenosis (p=0.046). CONCLUSION: A high level of serum triglyceride is a predictive factor of restenosis after PCI in young age patients with acute myocardial infarction.
Coronary Angiography
;
Coronary Restenosis
;
Follow-Up Studies
;
Homocysteine
;
Humans
;
Logistic Models
;
Myocardial Infarction*
;
Percutaneous Coronary Intervention*
;
Prognosis
;
Risk Factors
;
Sex Ratio
;
Smoke
;
Smoking
;
Triglycerides
9.Improvement of Dietary Attitudes of Elementary Students by Nutrition Labeling Education.
Korean Journal of Community Nutrition 2007;12(2):168-177
The purpose of this study was to improve the dietary attitudes of elementary students through nutrition labeling education. A class of fifth-grade elementary students was selected and educated for basic nutrition and reading of nutrition labeling for 8 weeks by using education materials from the KFDA. After the education, the children were subjected for the practice of reading nutrition labeling during winter vacation, and the changes in their dietary attitudes and practice were measured by using questionnaires for children and their parents along with measuring physical changes. The results were as follows: The level of nutritional knowledge was improved significantly after the education (p < 0.05). Nutrition labeling education increased the children's frequency of reading nutrition labeling from 34.2% to 57.9% while purchasing processed foods (p < 0.05), and 92.1% of the children answered that their dietary attitudes improved by nutrition labeling education. However, no improvement in physical measurements was observed after education. This result suggested that 8-week of education were not enough to show the improvement in physical measurements, and long-term and repeated education is necessary. After the education, most children answered that they recognized the benefit of reading nutrition labeling and they would read the nutrition labeling when purchasing processed foods. Parents also recognized the necessity of nutrition labeling education in school and suggested the need of nutrition labeling be easy to read. The above results suggested that nutrition labeling education is an effective way for improving dietary attitudes of children.
Child
;
Education*
;
Food Labeling*
;
Humans
;
Parents
;
Surveys and Questionnaires
10.Comparison of Double Balloon Enteroscopy and Small Bowel Series for the Evaluation of Small Bowel Lesions.
Ji Yun JO ; Jeong Sik BYEON ; Kee Don CHOI ; Hye Won PARK ; Gin Hyug LEE ; Seung Jae MYUNG ; Hwoon Yong JUNG ; Suk Kyun YANG ; Weon Seon HONG ; Jin Ho KIM ; Hyun Kwon HA
The Korean Journal of Gastroenterology 2006;48(1):25-31
BACKGROUND/AIMS: The role of double balloon enteroscopy (DBE) is still evolving. The aim of this study was to compare the diagnostic yield of DBE with that of small bowel series (SBS). METHODS: We enrolled patients with suspected small bowel disease consecutively, and performed both DBE and SBS in all patients. RESULTS: Eighteen patients (M:F=12:6, 14-82 years) were included. Indications for small bowel evaluation were obscure gastrointestinal bleeding (10), abdominal pain (5), diarrhea (2) and abnormal CT finding (1). Of 10 obscure gastrointestinal bleeding patients, 6 showed the same findings in both studies. However, 4 showed negative findings in SBS while DBE detected erosions or ulcerations. Of 5 abdominal pain patients, 3 showed the same results in both studies. However, 2 demonstrated different results. One was suspected of early Crohn's disease in SBS, but proved to be normal in DBE, and the other was suspected of malignancy in SBS but was suspected of benign ulcers in DBE. Of 2 chronic diarrhea patients, one was diagnosed as Crohn's disease in both studies. The other was suspected of tuberculosis in SBS but diagnosed as lymphangiectasia by DBE with biopsy. One patient with jejunal wall thickening in CT proved to be normal in both DBE and SBS. There were no serious complications associated with DBE and SBS. CONCLUSIONS: DBE is better than SBS in terms of diagnostic accuracy. DBE may become an important method for the evaluation of small bowel diseases.
Adolescent
;
Adult
;
Aged
;
Aged, 80 and over
;
Endoscopes, Gastrointestinal
;
*Endoscopy, Gastrointestinal
;
Female
;
Humans
;
Intestinal Diseases/*diagnosis/radiography
;
*Intestine, Small/pathology/radiography
;
Male
;
Middle Aged

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