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현동우,박재용,강태경,박기수,박태인,김창호,손상균,권건영,이규보,정태훈,권삼,Hyun, Dong-Woo,Park, Jae-Yong,Kang, Tae-Kyung,Park, Ki-Soo,Park, Tae-In,Kim, Chang-Ho,Sohn, Sang-Kyun,Kwon, Kun-Young,Lee, Kyu-Bo,Jung, Tae-Hoon,Kweon, Sam 대한결핵및호흡기학회 1998 Tuberculosis and Respiratory Diseases Vol.45 No.1
저자들은 발열, 체중감소 등의 증상과 흉부 X-선 사진상 폐경화의 소견이 있었던 환자에서 폐의 병변이 역형성 거대세포 림프종으로 추측되는 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Anaplastic large cell lymphoma(ALCL) is a recently recognized large cell lymphoma characterized by large pleomorphic cells, with prominent nucleoli, expressing the CD30(Ki-1) antigen. It is often misdiagnosed as metastatic carcinoma, malignant histiocytosis or Hodgkin's disease. Primary pulmonary ALCL is extremely rare although it frequently involves extranodal sites, e.g. skin, bone, gastrointestinal tract, soft tissue and lung. We report a case of ALCL suspected as primarily involving lung.
현동우 ( Dong Woo Hyun ),박진형 ( Jin Hyung Park ),박창근 ( Chang Kun Park ),윤영미 ( Young Mi Yun ),조창민 ( Chang Min Cho ),탁원영 ( Won Young Tak ),권영오 ( Young Oh Kweon ),김성국 ( Sung Kook Kim ),최용환 ( Yong Hwan Choi ) 대한내과학회 2003 대한내과학회지 Vol.64 No.5
목적 : 내시경적 생검은 위선종이나 위암의 진단적 수기로 가장 편리하고 손쉬운 검사방법이지만, 내시경적 생검과 점막절제술 후의 해부병리학적 차이가 보고 되고 있다. 이에 저자들은 위의 편평선종을 대상으로 내시경적 점막절제술의 진단적 가치를 분석하였다. 방법 : 1999년 1월부터 2002년 6월까지 위의 편평선종으로 진단되어 내시경적 점막절제술을 실시한 89예의 95병변을 대상으로 하였다. 대상환자 89명의 연령별 분포, 남녀 비, 병변의 위치 및 크기 Background : EMR is an alternative to surgical removal of superficial neoplastic lesions of the gastrointestinal tracts. The aim of this study is to assess the diagnostic efficacy of EMR in gastric flat adenoma. Methods : Ninety five lesions of gastric fl
경피 경정맥 간내 문맥전신성 단락술로 치료한 췌장의 동정맥 기형에 의한 간문맥 고혈압
현동우 ( Dong Woo Hyun ),박수영 ( Soo Young Park ),박진형 ( Jin Hyung Park ),박창근 ( Chang Kun Park ),윤영미 ( Young Mi Yun ),조창민 ( Chang Min Jo ),탁원영 ( Won Young Tak ),권영오 ( Young Oh Kweon ),김성국 ( Sung Kook Kim ) 대한소화기학회 2003 대한소화기학회지 Vol.41 No.6
Pancreatic arteriovenous malformation is very rare. However, it silently progresses and frequently brings about serious condition such as portal hypertension. The removal of pancreatic arteriovenous malformation is difficult once portal hypertension has developed. Surgery is the definitive treatment of choice, but it carries high risks when the patient`s condition is poor. The transjugular intrahepatic portosystemic shunt (TIPS) is a well-accepted procedure for the treatment of intractable portal hypertension. We experienced a case in which TIPS was used for the treatment of intractable portal hypertension caused by pancreatic arteriovenous malformation. The patient suffered from ascites and intractable gastrointestinal bleeding. The portal hypertension caused by pancreatic arteriovenous malformation was diagnosed by color Doppler ultrasonography, computed tomography (CT), and angiography. TIPS might be another treatment of choice for this rare disease, when the patient`s condition is too risky for surgical treatment. (Korean J Gastroenterol 2003;41:514-518)
태양광 모듈 집약형 Buck-Boost 컨버터 시스템의 모델링 및 제어
현동우(Dong-Woo Hyun),이귀준(Kui-Jun Lee) 전력전자학회 2021 전력전자학술대회 논문집 Vol.2021 No.11
본 논문은 태양광 모듈 집약형 Buck-Boost 컨버터 시스템을 제안하고, 이에 적합한 모델링 및 제어 방법을 제시한다. 제안된 컨버터는 각각의 태양광 모듈에 독립적으로 MPPT 제어를 수행하는 다수의 Buck 타입 회로가 구성되며, 각각의 출력을 직렬연결하여 단일 Boost 타입 회로를 통해 계통에 연계하는 구조이다. 본 논문에서는 전체 시스템을 단순화하여, 단일 Buck-Boost 컨버터에 대한 모델링 및 제어 방법을 제시하고, 시뮬레이션을 통하여 타당성을 검증하였다.
하인두암에서 후두인두 및 경부 식도 전 적출술 후 유리 공장 이식술의 합병증에 대한 후향적 분석
민현진(Hyun Jin Min),현동우(Dong Woo Hyun),김영호(Young Ho Kim),최은창(Eun Chang Choi),김광문(Kwang Moon Kim),김세헌(Se Heon Kim) 대한두경부종양학회 2008 대한두경부 종양학회지 Vol.24 No.1
Hypophayngeal cancers are usually diagnosed in advanced stages and in many cases, they need total pharyngo-cervical esophagectomy and surgical reconstruction. Among many surgical reconstructive methods, jejunal free flap has anatomical and functional advantages such as tubed nature, peristaltic activity, excellent blood supply. In this study we analysed the surgical procedure and complications of jejunal free flap after total pharyngo-cervical esophagectomy. 20 cases performed jejunal free flap from 1995 to 2007 at Severance Hospital were reviewed. According to time of onset, early and late complications were reviewed. Surgical procedure was reviewed with operation record. Oral diet tolerance was reviewed on the basis of pharyngogram and subjective symptoms. The most common complication was stricture, and it occurred in 40% of cases and 63% of them were managed with conservative care. As early complication, fistula formation was all managed with conservative care. Oral feeding tolerance after jejunal free flap was 65% and 7 patients were tolerable to general diet. In our study, stricture was the most common complication and its management is important in post op oral diet tolerance.
항과립구 항체 골수스캔을 이용한 다발성 골수종 병변의 평가 - 단순골 X-선검사 및 골스캔과의 비교
김동환,이재태,백진호,정진태,현동우,천경아,이영학,손상균,송홍석,이규보 ( Dong Hwan Kim,Jae Tae Lee,Jin Ho Baek,Jin Tae Jung,Dong Woo Hyun,Kyung Ah Chun,Young Hak Lee,Sang Kyun Sohn,Hong Seok Song,Kyu Bo Lee ) 대한핵의학회 1998 핵의학 분자영상 Vol.32 No.4
Purpose: Simple X-ray study and bone scan have limiitations for early diagnosis of bone or bone marrow lesions in multiple myeloma. The purpose of this study was to evaluate the diagnostic usefulness of bone marrow imrnunoscintigraphy using anti-granulocyte monoclonal antibody for the evaluation of bone involvement I:n multiple myeloma. Materials and Methods: In 22 patients (Male: 15, Female: 7) with multiple myeloma, we perforrned whole-body immunoscintigraphy using ' Tc-labelled antigranulocyte antibody (BW 250/183, Scintimum Granulozyt CIS, France) and compared the findings with those of simple bone radiography and Tc-MDP bone scan. Abnonnal findings in bone marrow scintigraphy were, considered to be present in case of expansion of peripheral bone marrow or focal photan defect in axial bones. Results: Marrow expansion was noted in 15 of 22 patients (68%). Focal photon defects were found in 18 patients (82%). While one (33%) of 3 patients with Stage II disease showed focal defects in bone marrow scan, abnormal focal defects were observed in 17 of 19 (90%) patients with Stage III. Among 124 focal abnormal sites which were observed in bone marrow scan, bone scan or simple bone radiography, bone rnarrow scan detected 92 sites (74%), whereas 82 sites (66%) were observed in simple bone radiography(58 sites, 47%) or bone scan(40 sites, 32%). Fifty-one (41%) out of 124 bone lesions were detected by bone marrow scan only, and located mostly in thoracolumbar spine. Conclusion: Bone marrow scan using Tc-labelled antigranulocyte antibody seems to be a more sensitive procedure for the detection of pathologic bone lesions than simple bone X-ray ar bone sean in patients with multiple myeloma. (Korean J Nucl Med 1998;32:354-64)
이영학(Young Hahk Lee),현동우(Dong Woo Hyun),김정균(Jung Gyun Kim),배선근(Sun Kun Bae),곽동석(Dong Suk Kwak),손상균(Sang Kyun Sohn),이재태(Jae Tae Lee),이규보(Kyu Bo Lee) 대한내과학회 1997 대한내과학회지 Vol.52 No.4
N/A Objectives: It is well known that Acute Leukemic patients with Hyperleukocytosis (ALH, leukocyte count≥100,000/μL) have poor prognosis. This is indebted in fatal complications arising from cerebral and pulmonary leukostasis. To investigate the factors influence on the prognosis of these patients, we have analyzed age, sex, laboratory findings and complications and their relationship to remission rate. Methods: Retrospective evaluation was done from January 1985 to March 1994 on fifty-four patients with ALH. We excluded secondary leukemias transformed from chronic myelogeneous leukemia, relapsed acute leukemia and myelodysplastic syndrome in this study. The prognostic factors associated with early death were also evaluated. Results: 1) Hyperuricemia and incidence of central nervous system and respiratory symptoms were higher in acute myelogeneous leukemia (AML) with hyperleu-kocytosis than in acute lymphocytic leukemia (ALL), 2) Twenty-two of fifty-four patients had complete remission by remission induction chemotherapy. Re- mission rate was 41%, median duration of remission was 26 weeks and 1 year survival rate was 11%. 3) There were no differences in remission rate between male and female and higher WBC group (WBC≥200,000/pL) and lower WBC group (WBC 100,000~200,000/u L). 4) The group with better performance status (ECOG score1-2), younger (age below 40) and higher hemoglobin level (Hb>10g/dL) had higher remission rate. The group of AML and with hepatomegaly had lower remission rate than the group of ALL and without hepatomegly. 5) Early death rate of AML was higher than that of All. Infection was the most common cause of early death in both AML and ALL. 6) Early death rate between the two groups managed with and without leukapheresis was not different. Conclusions: This result reveals that acute leukemia with hyperleukocytosis is grave disease, especially the patients with poor performance status (ECOG score : 3-4), older age above 40 and severe anemia (Hb<10g/dL) have poor prognosis, The group of AML and with hepatomegaly showed worse prognosis than the group of ALL and without hepatomegaly.
11 만성 B형 간염 및 간 경변증 환자에서 간 섬유화의 지표로서 혈청 히아루론산과 4형 콜라겐 7S Donmain 및 AST/ALT비의 진단적 유용성
박진형 ( Jin Hyung Park ),박창근 ( Chang Keun Park ),윤영미 ( Young Mi Yoon ),현동우 ( Dong Woo Hyun ),조창민 ( Chang Min Cho ),탁원영 ( Won Young Tak ),권영오 ( Young Oh Kweon ),김성국 ( Sung Kook Kim ),최용환 ( Yong Hwan Choi 대한소화기학회 2002 대한소화기학회 추계학술대회 Vol.2002 No.-