1.A Case of Eccrine Nevus.
Yoon Jeong CHOI ; Yeon Soon LIM ; Hae Young CHOI ; Ki Bum MYUNG
Annals of Dermatology 1998;10(4):259-261
Eccrine nevus is a rare benign cutaneous lesion, frequently present at birth or at an early age. Herein we report on a 1-year-old girl with erythematous papules in a zosteriform arrangement associated with hyperhidrosis on the left side of her trunk.
Female
;
Humans
;
Hyperhidrosis
;
Nevus*
;
Parturition
2.MRI Findings of COVID-19 Associated Acute Necrotizing Encephalopathy in Two Pediatric Patients: Case Report and Literature Review
Yoon Yeong CHOI ; Ha Young LEE ; Myung Kwan LIM ; Young Hye KANG
Journal of the Korean Society of Radiology 2024;85(3):682-690
Acute necrotizing encephalopathy (ANE) is a rare immune-mediated complication of a viral infection commonly involving the bilateral thalamus and has been reported mainly in children. Here, we describe the MRI findings of coronavirus disease 2019 (COVID-19)-associated ANE in two pediatric patients, including a 7-year-old girl with fever and mental change, and a 6-year-old girl with fever and generalized seizures. Brain MRI revealed symmetrical T2 fluid attenuated inversion recovery high-signal intensity lesions in the bilateral thalamus with central hemorrhage. In one patient, the thalamic lesions showed a trilaminar pattern on the apparent diffusion coefficient map. This report emphasizes the importance of creating awareness regarding these findings in patients with COVID-19, particularly in children with severe neurological symptoms. Furthermore, it provides a literature review of several documented cases of COVID-19 presenting with bilateral thalamic hemorrhagic necrosis, suggesting a diagnosis of ANE.
3.MRI Findings of COVID-19 Associated Acute Necrotizing Encephalopathy in Two Pediatric Patients: Case Report and Literature Review
Yoon Yeong CHOI ; Ha Young LEE ; Myung Kwan LIM ; Young Hye KANG
Journal of the Korean Society of Radiology 2024;85(3):682-690
Acute necrotizing encephalopathy (ANE) is a rare immune-mediated complication of a viral infection commonly involving the bilateral thalamus and has been reported mainly in children. Here, we describe the MRI findings of coronavirus disease 2019 (COVID-19)-associated ANE in two pediatric patients, including a 7-year-old girl with fever and mental change, and a 6-year-old girl with fever and generalized seizures. Brain MRI revealed symmetrical T2 fluid attenuated inversion recovery high-signal intensity lesions in the bilateral thalamus with central hemorrhage. In one patient, the thalamic lesions showed a trilaminar pattern on the apparent diffusion coefficient map. This report emphasizes the importance of creating awareness regarding these findings in patients with COVID-19, particularly in children with severe neurological symptoms. Furthermore, it provides a literature review of several documented cases of COVID-19 presenting with bilateral thalamic hemorrhagic necrosis, suggesting a diagnosis of ANE.
4.MRI Findings of COVID-19 Associated Acute Necrotizing Encephalopathy in Two Pediatric Patients: Case Report and Literature Review
Yoon Yeong CHOI ; Ha Young LEE ; Myung Kwan LIM ; Young Hye KANG
Journal of the Korean Society of Radiology 2024;85(3):682-690
Acute necrotizing encephalopathy (ANE) is a rare immune-mediated complication of a viral infection commonly involving the bilateral thalamus and has been reported mainly in children. Here, we describe the MRI findings of coronavirus disease 2019 (COVID-19)-associated ANE in two pediatric patients, including a 7-year-old girl with fever and mental change, and a 6-year-old girl with fever and generalized seizures. Brain MRI revealed symmetrical T2 fluid attenuated inversion recovery high-signal intensity lesions in the bilateral thalamus with central hemorrhage. In one patient, the thalamic lesions showed a trilaminar pattern on the apparent diffusion coefficient map. This report emphasizes the importance of creating awareness regarding these findings in patients with COVID-19, particularly in children with severe neurological symptoms. Furthermore, it provides a literature review of several documented cases of COVID-19 presenting with bilateral thalamic hemorrhagic necrosis, suggesting a diagnosis of ANE.
5.Validation of Onen's Alternative Grading System for Congenital Hydronephrosis.
Da Eun WOO ; Myung Hee LIM ; Myung Uk KIM ; Sae Yoon KIM ; Yong Hoon PARK
Journal of the Korean Society of Pediatric Nephrology 2014;18(2):77-84
PURPOSE: The purpose of this study was to compare the validity of Onen's alternative grading system (AGS) with that of the APDRP and SFU grading systems in patients with isolated and complicated congenital hydronephrosis. METHODS: We retrospectively reviewed the medical records of 153 patients (204 renal units) diagnosed with congenital hydronephrosis between January 2002 and December 2011. We classified patients into 2 groups; isolated or complicated hydronephrosis. All renal units were graded according to anterior-posterior diameter of renal pelvis (APDRP), Society for Fetus Urology (SFU) and Onen's grading systems. We analyzed the prognosis of hydronephrosis, according to each grading system, at 2 years of age. RESULTS: There were 152 renal units with isolated hydronephrosis and 52 renal units with complicated hydronephrosis. The isolated hydronephrosis group had a lower grade according to Onen's AGS, and showed more frequent spontaneous remission by 2 years of age. There was more frequent obstruction (P=0.000) and surgical treatment (P=0.000) of units with high-grade hydronephrosis according to Onen's AGS. In the complicated hydronephrosis group the frequencies of spontaneous remission (P=0.015) and renal dysfunction (P=0.013) were significantly higher than those in high-grade hydronephrosis, as indicated by Onen's AGS. There were no significant differences in clinical outcomes among the highest grade groups, according to the 3 systems, in either isolated or complicated hydronephrosis. CONCLUSION: Onen's AGS reflects the prognosis of hydronephrosis as well as other grading systems in those with isolated hydronephrosis. It was better predictor of renal dysfunction in those with complicated hydronephrosis. However, Onen's AGS was not superior to the other grading systems in terms of predicting prognosis, especially in high-grade hydronephrosis.
Fetus
;
Humans
;
Hydronephrosis*
;
Kidney Pelvis
;
Medical Records
;
Prognosis
;
Remission, Spontaneous
;
Retrospective Studies
;
Ultrasonography
;
Urology
6.Serum uric acid in Korean children and adolescents: reference percentiles and association with metabolic syndrome
Myung Hyun CHO ; Yoon Mo KIM ; Jong Hyung YOON ; Dong Ho KIM ; Jung Sub LIM
Annals of Pediatric Endocrinology & Metabolism 2020;25(2):104-111
Purpose:
To establish age/sex-specific reference intervals for serum uric acid and to examine the associations between serum uric acid level and metabolic syndrome (MetS) and its components in Korean children and adolescents.
Methods:
We analyzed data for 1,349 subjects aged 10 to 19 years from the Korea National Health and Nutrition Examination Survey 2016–2017.
Results:
The mean uric acid levels were 5.9±1.3 mg/dL (interquartile range, 5.0–6.8 mg/dL) in males and 4.6±0.9 mg/dL (interquartile range, 3.9–5.2 mg/dL) in females. The mean uric acid level increased significantly from 10–13 years of age in males, but not in females. The overall prevalence of MetS was 5.9% (7.3% in males and 4.3% in females; P=0.022). The prevalences of MetS in the lowest, second, third, and highest quartiles of uric acid level were 4.4%, 3.3%, 6.1%, and 15.2%, respectively, in males (P for trend <0.001) and 1.9%, 0.0%, 4.1%, and 10.9%, respectively, in females (P for trend <0.001). Compared with the lowest quartile of uric acid level, the odds ratio (with 95% confidence interval) for MetS in the highest quartile was 2.897 (1.140–7.361) in males and 5.173 (1.459–18.342) in females. Subjects in the highest quartile exhibited increased risk for abdominal obesity and low high-density lipoprotein cholesterol in both sexes.
Conclusion
Serum uric acid level is positively associated with MetS and its components abdominal obesity and low high-density lipoprotein cholesterol.
7.The Usefulness of the 3-D Overlapped Reconstruction MR Angiographic Technique in Patients with Hemifacial Spasm - A Preliminary Study.
Yoon Mi LEE ; Myung Kwan LIM ; Sun Won PARK ; Hae Wook PYUN ; Myung Kwan YOON ; Eun Young KIM ; Chang Hae SUH
Journal of the Korean Society of Magnetic Resonance in Medicine 2007;11(1):33-38
PURPOSE: To investigate the applicability of the new three-dimensional overlapped reconstruction MR angiography (3-D ORMRA) technique in patients with hemifacial spasm and to compare the new 3-D reconstruction images with conventional MRA source images. MATERIALS AND METHODS: The study group comprised 27 patients with surgically proven hemifacial spasm. In all patients, conventional MRA source images and 3-D fast imaging employing steady-state acquisition (FIESTA) images were obtained prospectively. After 3-D MR angiographic images were obtained, the 3-D MRA and FIESTA images were overlapped at the workstation by using GE A/W 4.2 add/sub software. We analyzed the relationship between the offending vessels and root exit zone of the facial nerve using both 3-D ORMRA images and conventional MRA source images. RESULTS: In 25 of 27 patients, the offending vessel at the REZ of the facial nerve could be correctly identified on conventional MRA source images. In all patients, the presumed offending vessels depicted by the overlapped 3-D reconstruction MRA image corresponded well with the intraoperative findings. The 3-D reconstruction image showed more clear visualization of the spatial relationship between the offending vessels and the root exit zone of the facial nerve. CONCLUSION: The overlapped 3-D reconstruction MR angiography technique is very useful and informative in patients with hemifacial spasm, as compared with conventional MRA angiography technique.
Angiography
;
Facial Nerve
;
Hemifacial Spasm*
;
Humans
;
Prospective Studies
8.Post-thoracotomy Analgesia & ICU Length of Stay: Comparison of Thoracic Epidrual Morphine Infusion and Lumbar Epidural Plus Intravenous Morphine Infusion.
Seok Hwa YOON ; Jung Hyun LEE ; Hee Suk YOON ; Yoon Hee KIM ; Myung Hoon NA ; Seung Pyung LIM
The Korean Journal of Critical Care Medicine 2007;22(2):77-82
BACKGROUND: Length of stay in ICU after thoracotomy is related to postoperative pulmonary function and complication which are affected by postoperative pain. For the post-thoracotomy pain control, epidural morphine is commonly used. Although total dose-requirement for analgesia of lumbar epidural morphine is more than the thoracic, lumbar epidural morphine could be substituted the thoracic. Our study compared the effect of patient controlled analgesia using thoracic epidural morphine (TEA group) and lumbar epidural analgesia with patient controlled intravenous analgesia using morphine (LEA+IV group). METHODS: Sixty patients were randomly assigned into one of the two groups. The epidural taps were done before the induction. In all the patients morphine 0.2 mg/ml was administered via the epidural catheter at the end of surgery. In TEA group, basal infusion rate was 0.1 mg/hr and bolus dose was 0.02 mg. In LEA+IV group, basal infusion rate of epidural morphine was 0.1 mg/hr, patient controlled intravenous analgesia with morphine started when patients arrived at ICU, and basal infusion rate of intravenous morphine was 1.0 mg/hr and bolus dose was 0.8 mg. Pain score, side effect, postoperative length of stay in ICU and hospital were observed. RESULTS: There were no significant differences between two groups in pain score, side effects, length of stay in ICU and hospital. CONCLUSIONS: Lumbar epidural analgesia with patient controlled intravenous analgesia using morphine showed similar postoperative analgesia and length of stay in ICU and hospital compared to thoracic epidural analgesia with morphine, so that can substitute the thoracic epidural analgesia.
Analgesia*
;
Analgesia, Epidural
;
Analgesia, Patient-Controlled
;
Catheters
;
Humans
;
Length of Stay*
;
Morphine*
;
Pain, Postoperative
;
Tea
;
Thoracotomy
9.The effect of palatal height on the Korean vowels.
Bo Yoon CHUNG ; Young Jun LIM ; Myung Joo KIM ; Shin Eun NAM ; Seung Pyo LEE ; Ho Beom KWON
The Journal of Korean Academy of Prosthodontics 2010;48(1):69-74
PURPOSE: The purpose of this study was to analyze the influence of palatal height on Korean vowels and speech intelligibility in Korean adults and to produce baseline data for future prosthodontic treatment. MATERIAL AND METHODS: Forty one healthy Korean men and women who had no problem in pronunciation, hearing, and communication and had no history of airway disease participated in this study. Subjects were classified into H, M, and L groups after clinical determination of palatal height with study casts. Seven Korean vowels were used as sample vowels and subjects' clear speech sounds were recorded using Multispeech software program on computer. The F1 and the F2 of 3 groupswere produced and they were compared. In addition, the vowel working spaces of 3 groups by /a/, /i/, and /u/ corner vowels were obtained and their areas were compared. Kruskal-Wallis test and Mann-Whiteny U test were used as statistical methods and P < .05 was considered statistically significant. RESULTS: There were no significant differences in formant frequencies among 3 groups except for the F2 formant frequency between H and L group (P = .003). In the analysis of vowel working space areas of 3 groups, the vowel working spaces of 3 groups were similar in shape and no significant differences of their areas were found. CONCLUSION: The palatal height did not affect vowel frequencies in most of the vowels and speech intelligibility. The dynamics of tongue activity seems to compensate the morphological difference.
Adult
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Female
;
Hearing
;
Humans
;
Male
;
Phonetics
;
Prosthodontics
;
Speech Intelligibility
;
Tongue
10.Different 18F-FDG Uptake According to Tumor Location and Morphology of Cholangiocarcinoma and Its Clinical Implication.
Won Seok LEE ; Yoon Jae LEE ; Seok Tae LIM ; Myung Hee SOHN ; Seung Ok LEE
Nuclear Medicine and Molecular Imaging 2009;43(4):317-322
PURPOSE: 18F-flurodeoxyglucose (FDG) uptake on positron emission tomography (PET) scan has been found to reflect tumor aggressiveness and prognosis in various types of cancer. However, pattern of FDG uptake in biliary malignancies and its clinical significance have not been studied well. The purpose of this study was to assess the additional value of 18F-FDG PET in differential diagnosis and prognosis of cholangiocarcinoma (CC) according to the tumor location and tumor morphology. MATERIALS AND METHODS: From April 2005 to May 2008, eighty two patients (M:F=55:27, age 66.2+/-9.6 yrs) with CC underwent 18F-FDG PET. For semiquantitative analysis, the maximum standardized uptake value (SUVmax) was obtained from the primary tumor. The difference of SUVmax according to the tumor location and tumor growth pattern, such as scirrhous type, nodular type, polypoid type were compared. RESULTS: Overall sensitivity of PET scan was 81.7% in CC. SUVmax on PET scan in intrahepatic CC was significantly higher compared to extrahepatic CC. In extrahepatic CC, polypoid type showed significantly higher SUVmax compared to scirrhous type. CONCLUSION: 18F-FDG PET may have a significant impact on clinical decision-making and on the management of Intrahepatic cholangiocarcinoma. And it is related to the shape of the tumor and the sensitivity of detection is higher in the mass-forming type than in the scirrhous type.
Cholangiocarcinoma
;
Diagnosis, Differential
;
Fluorodeoxyglucose F18
;
Humans
;
Liver Neoplasms
;
Positron-Emission Tomography
;
Prognosis