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Eosinophilic pustular folliculitis in Korea: a single centre experience and literature review
( Dae-lyong Ha ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Hyunju Jin ),( Hyang-suk You ),( Woo-haing Shim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bu 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2
Background: Eosinophilic pustular folliculitis (EPF) is a kind of chronic inflammatory disease. Though the clinical characteristics of EPF are well-described, the clinical data about Korean EPF need to be investigated. Objectives: To investigate the clinical findings of EPF in Korea. Methods: We retrospectively reviewed medical records, and clinical photos of 42 patients diagnosed with EPF by skin biopsy in the Pusan National University Hospital (Busan and Yangsan) over the 15 year period (2002-2017). And we also reviewed other Korean EPF patients collected by pubmed and Koreamed searching. Results: Among 145 patients, we found 118 cases of classic EPF (mean age; 34.7 years, male to female ratio [M:F]; 1:1.15) mostly affecting the face (88.1%); 14 cases of immunosuppression-associated EPF (mean age: 40.9 years, M:F; 2.5:1) less frequently affected the face (50%) and 13 cases of infancy-associated EPF (mean age; 0.6 years, M:F; 1:1.17) primarily affecting the scalp (85%). Of 116 patients, with topical and systemic treatment, 71 patients (61.2%) showed improvement, 23(19.8%) patients showed partial response and 20 patients (17.2%) showed no response. Conclusion: Compared to previous Caucasian studies, classic EPF is more common in Korea. Our study could be used as the basic data of Korean EPF and be helpful for dermatologist to understand characteristics of EPF in Korea.
RNN NARX Model Based Demand Management for Smart Grid
Sang-Hyun Lee,Park Dae-Won,Kyung-Il Moon 국제문화기술진흥원 2014 International Journal of Advanced Culture Technolo Vol.2 No.2
In the smart grid, it will be possible to communicate with the consumers for the purposes of monitoring and controlling their power consumption without disturbing their business or comfort. This will bring easier administration capabilities for the utilities. On the other hand, consumers will require more advanced home automation tools which can be implemented by using advanced sensor technologies. For instance, consumers may need to adapt their consumption according to the dynamically varying electricity prices which necessitates home automation tools. This paper tries to combine neural network and nonlinear autoregressive with exogenous variable (NARX) class for next week electric load forecasting. The suitability of the proposed approach is illustrated through an application to electric load consumption data. The suggested system provides a useful and suitable tool especially for the load forecasting.
Solitary juvenile xanthogranuloma: clinical and dermoscopic findings
( Dae-lyong Ha ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Hyunju Jin ),( Hyang-suk You ),( Woo-haing Shim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bu 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2
Background: Juvenile xanthogranuloma (JXG) is a common non-Langerhans cell histiocytosis. JXG can have 2 main clinical forms with a popular form as multiple papules in infants and children and a nodular form as 1 or a few lesions in adults. Most data about JXG have been focused on common popular form, and clinical data about nodular form or solitary JXG are very limited. Objectives: To investigate the clinical and dermoscopic findings of solitary JXG. Methods: We retrospectively reviewed medical records, and clinical and dermoscopic photos of 51 patients with solitary JXG among 93 JXG patients confirmed histopathologically in the Pusan National University Hospital (Busan and Yangsan) from 2005 to 2017. Results: Solitary JXG was more common than classic multiple popular form (51/93, 54.8%). Of 51 patients with solitary JXG, 40 (78.4%) were children (range in 0.25-6) and 11 (21.6%) were adults (range in 22-55). Childhood JXG was bigger than adult JXG (mean diameter: 6.3 mm vs 3.7 mm, P < 0.0001). The predominant involved anatomical site was scalp (35%) in childhood JXG and face (36.4%) in adult JXG. Setting sun appearance was the most common dermoscopic feature. 23 lesions were removed during biopsy and 4 with follow-up had spontaneous involution. Conclusion: The majority of JXG studies were done on Caucasians and there has been no study focusing on solitary JXG like this study.
( Dae-lyong Ha ),( Woo-il Kim ),( Min-young Yang ),( Won-ku Lee ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Gun-wook Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ),( Hoon-soo K 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Malignant mixed tumor (MMT) is a rare malignant tumor originated from sweat gland cells. As MMT tends to recur after inadequate excision, an early wide excision with a broad margin thought that the most optimal treatment. A 78-year-old man presented with a skin-colored nodule on the right 2nd metacarpo-phalangeal joint with duration of three years. The nodule had been excised 3 times in other hospital before visiting us. However, lesion had recurred within the incision line. Histopathologic examination showed chondroid stroma with cords of cells forming glandular structures with increased mitotic activity and cellular atypia. Mohs microscopic surgery (MMS) was performed under the diagnosis of MMT. After two stages of MMS, a tumor-free plane was achieved with a 6x5 cm defect and tendon was preserved. The patient was transferred to plastic surgery department and the defect was reconstructed using skin graft. A 10 month follow-up revealed no local recurrence or metastasis. MMT tends to show unclear clinical margin, moreover hand is hard to secure sufficient margin. The aims of MMS are to preserve normal tissue and completely remove tumor, MMS could be a good treatment option for MMT of the hand that needs maximal tissue preservation. And the distinctive histology of MMT leads itself well to MMS to achieve complete tumor extirpation. So, we herein report a case of MMT of the skin on the hand dorsum treated with MMS.
( Dae Hoe Gu ),( Moon Young Kim ),( Yeon Seok Seo ),( Sang Gyune Kim ),( Han Ah Lee ),( Tae Hyung Kim ),( Young Kul Jung ),( Altay Kandemir ),( Ji Hoon Kim ),( Hyunggin An ),( Hyung Joon Yim ),( Jong 대한간학회 2018 Clinical and Molecular Hepatology(대한간학회지) Vol.24 No.3
Background/Aims: The most widely used method for diagnosing sarcopenia is the skeletal muscle index (SMI). Several studies have suggested that psoas muscle thickness per height (PMTH) is also effective for detecting sarcopenia and predicting prognosis in patients with cirrhosis. The aim of this study was to evaluate the optimal cutoff values of PMTH for detecting sarcopenia in cirrhotic patients. Methods: All cirrhotic patients who underwent abdominal computed tomography (CT) scan including L3 and umbilical levels for measuring SMI and transverse psoas muscle thickness, respectively, were included. Two definitions of sarcopenia were used: (1) sex-specific cutoffs of SMI (≤52.4 ㎠/㎡ in men and ≤38.5 ㎠/㎡ in women) for SMIsarcopenia and (2) cutoff of PMTH (<16.8 mm/m) for PMTH-sarcopenia. Results: Six hundred fifty-three patients were included. The average age was 53.6±10.2 years, and 499 patients (76.4%) were men. PMTH correlated well with SMI in both men and women (P<0.001). Two hundred forty-one (36.9%) patients met the criteria for SMI-sarcopenia. The best PMTH cutoff values for predicting SMI-sarcopenia were 17.3 mm/m in men and 10.4 mm/m in women, and these were defined as sex-specific cutoffs of PMTH (SsPMTH). The previously published cutoff of PMTH was defined as sex-nonspecific cutoff of PMTH (SnPMTH). Two hundred thirty (35.2%) patients were diagnosed with SsPMTH-sarcopenia, and 280 (44.4%) patients were diagnosed with SnPMTH-sarcopenia. On a multivariate Cox regression analysis, SsPMTH-sarcopenia (hazard ratio [HR], 1.944; 95% confidence interval [CI], 1.144-3.304; P=0.014) was significantly associated with mortality, while SnPMTH-sarcopenia was not (HR, 1.446; 95% CI, 0.861-2.431; P=0.164). Conclusions: PMTH was well correlated with SMI in cirrhotic patients. SsPMTH-sarcopenia was an independent predictor of mortality in these patients and more accurately predicted mortality compared to SnPMTH-sarcopenia. (Clin Mol Hepatol 2018;24:319-330)
( Dae Sung Kim ),( Minhyeok Lee ),( Oh Jung Kwon ),( Inbeom Jeong ),( Ji Woong Son ),( Moon Jun Na ),( Sun Jung Kwon ) 대한결핵 및 호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
A 45-year-old man presented with dyspnea and hemoptysis during exercise. A chest computed tomography (CT) revealed multifocal diffuse patchy ground glass opacity and interlobular septal thickening in both the lungs. Permeability pulmonary edema or pulmonary hemorrhage was suspected. Serologic studies for autoimmune disorders and vasculitis were negative. There was no laboratory evidence of coagulopathy, other hematopoietic disease or infectious disease. Considering correlation with exercise, we diagnosed exercise-induced pulmonary hemorrhage (EIPH) or exerciseinduced pulmonary edema (EIPE). The patient was managed with antifibrinolytics, antibiotics, and antitussive agent. After a week, follow-up chest CT revealed completely resolved pulmonary hemorrhage. About 2 months after the first event, he visited again with dyspnea and hemoptysis during running. In the present study, we report a case of recurrent pulmonary hemorrhage after exercise.