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Colonic Muco-Submucosal Elongated Polyp 1예
이현성,최봉기,서우선,김민기,이재경,양성연,박은택,장윤식,이상혁,설상영,정정명,윤혜경 대한소화기내시경학회 2003 Clinical Endoscopy Vol.26 No.2
Colonic muco-submucosal elongated polyp (CMSEP) is a rare disease which has been firstly reported by Matake. Only 21 cases have been reported since 1994. Although the mechanism of generation of such polyps remains unknown, their elongation may be caused by intestinal motion for a long period. The occurrence sites were distributed throughout the colon, excluding the rectum. CMSEP is coverd with normal mucosa and consisted of edematous, loose, fibrous, connective tissue and dense, fibrous submucosal layer, often dilatation of blood vessels and lymphatics. We present a case of CMSEP diagnosed by a colonoscopic polypectomy. (Korean J Gastrointest Endosc 2003;26:103-105) Colonic muco-submucosal elongated polyp (CMSEP)은 점막과 점막하층에 국한되면서 길게 늘어진 용종으로 1994년에 Matake 등이 최초로 보고하였고 현재까지 일본에서 약 21예가 보고되었다. CMSEP의 발생기전은 대장운동에 의한 대장벽의 지속적인 기계적 견인으로 인하여 점막과 점막하층이 비종양성으로 길게 늘어져 용종의 형태로 나타나는 것으로 생각된다. 발생장소는 대장의 선종이나 악성 종양과는 달리 직장을 제외한 모든 대장에 걸쳐 나타나며, 용종의 발생과 환자의 성별이나 나이 및 주관적인 임상증상은 무관하다. 조직학적으로는 점막과 점막하층에 국한되면서 근육층은 포함하지 않는다. 저자들은 대장내시경 검사를 통해 발견되어 용종절제술로 제거한 후 진단된 CMSEP 1예를 경험하였기에 보고한다.
이현성,박병우,진경수,정광호 ( Hyun Sung Lee,Byung Woo Park,Kyung Soo Jin,Kwang Ho Jeong ) 충북대학교 산업과학기술연구소 1996 산업과학기술연구 논문집 Vol.10 No.2
Abstract_Roman 'I'he design method of the two-stage power amplifier by using the S-parameters is presented in the frequency band of 0.125-1.8GHz. The used S-parameters of the HEMT and the BJT are meosured data by the vector network analyzer. The input/o
이현성 한국공간디자인학회 2023 한국공간디자인학회논문집 Vol.18 No.3
(Background and Purpose) According to the promotion plan of public design under the Public Design Promotion Act, a strategy for public design with a strong foundation was established, and practical measures in various public areas were needed. This study aims to contribute to the purpose of promotion public design as a characteristic study on the types of governance models for promoting public design based on the broad interpretation of governance as a way to solve various social problems and coordination patterns. In addition, various existing types of participation, cooperation, methods, and investment are reinterpreted from the perspective of governance as a problem-solving style to provide basic data for the public design governance model as a practice plan for public design. (Method) The study targets 12 governance models in four types: public value, public communication, public asset, and public cooperation of the governance model for public design promotion verified through the UNESCO ESD Official Project Certification System. The characteristic analysis of model type consisted of two steps. In the first stage analysis, macro analysis for each governance model was derived based on three criteria: topic-keyword-strategy. There are four main criteria used in the second-stage analysis. First of all, the strategies analyzed in step 1 were classified into four categories, and each detailed classification was analyzed into two detailed strategies, and the contents and characteristics accordingly were analyzed and described. Through each stage of analysis, the classification of governance models for the public design promotion and secondly, the part of what research topic can be divided into, and the method of governance were analyzed in a tangible manner to provide a foundation for use and application as a practical model. Although the research method may be biased toward the qualitative aspect, it was analyzed so that it can be used as a practical public design methodology by providing various expansion and applicability through the framework of qualitative analysis of governance model for the public design promotion. (Results) As a result of this study, the model characteristics of governance for public design promotion were analyzed that 48 major strategic characteristics such as social value, cloud sourcing, public proposal, private investment, sharing economy, public value realization, C.S.V., consumer-centered, social value discovery, private enterprise participation, citizen-led. public investment, private-led proposal type, idea sourcing, professional governance, capacity building, public cooperation, toolkit, digital, universal governance, guide guidelines, prototypes, rapid application, situation-specific solutions, user-centered, and standard preparation appeared. (Conclusions) Through this study, the deepening characteristics of the public design governance model, a cooperation and participation system for solving public problems, are analyzed as a methodology to strengthen the execution of public design.
단일화수술 후 분리되어 남은 체폐동맥 부행혈관에 의한 기관지 압박
이현성,박영환,홍유선,조범구 대한흉부심장혈관외과학회 1999 Journal of Chest Surgery (J Chest Surg) Vol.32 No.12
Multistage unifocalization and complete repair have been performed for pulmonary atresia ventricular septal defect and major aortopulmonary collateral arteries. We reported a case that divided major aortopulmonary collateral artery was changed into an aneurysm that compressed the left main bronchus. A 1-year-8-month old boy was operated. The Rastelli operation with left pulmonary artery reconstructuion ligation of patent ductus arteriosus and take-down of right Blalock-Taussing shunt was performed on the patient who had pulmonary atreisia ventricular septal defect patent ductus arteriosus and MAPCA at 1 year and 8 months of his age. He previously underwent the unifocalization and right B-T shunt at 9 months of age,. He repeatedly had difficulty in weaning from the mechanical ventilator, After removing the aneurysm from the divided MAPCA that compressed the left main bronchus externally it was possible to wean him from the mechanical ventilator.
완전 대정맥-폐동맥 연결로 전환에 의한 폰탄술식 후 단백소모성 장질환의 치료
이현성,박영환,홍유선,송석원,이진구 대한흉부심장혈관외과학회 2001 Journal of Chest Surgery (J Chest Surg) Vol.34 No.1
폰탄술식 후 수술사망률이 감소하고 생존자가 증가함에 따라 대정맥-폐동맥 순환의 부자연스러운 생리와 관련된 합병증이 발생하게 되었다. 이러한 혈역학적인 문제로 인하여 발생한 합병증 중의 하나가 단백소모성 장질환이다. 단백소모성 장질환은 폰탄술식 후에 발생하는 드물지만 매우 위험한 합병증이다. 많은 다른 치료경향이 제안되었지만 성공적인 치료보고는 제한되어 있다. 폰탄술식후 단백소모성 장질환이 발생한 3명의 환아에서 완전 대정맥-폐동맥 연결로 전환을 시행하였다. 완전 대정맥 폐동맥 연결로 전환함이 만족할 만한 치료방법임을 보고하는 바이다.
Harmonic Scalpel을 이용한 요골동맥의 적출
이현성,강정한,최성실,장병철 대한흉부심장혈관외과학회 2001 Journal of Chest Surgery (J Chest Surg) Vol.34 No.6
1970년대에 요골동맥은 관상동맥우회로술의 이식편으로 제안되었으나 적출시 나타나는 경직에 의한 이식편의 폐쇄 때문에 금지되었다. 새로운 항경직성 약물의 등장과 외상을 최소화시키는 기술의 발전은 관상동맥 우회로술의 이식편으로 요골동맥을 되살리게 되었다. Harmonic Scalpel(Ultracision Inc, Smitweld, Rl)은 요골동맥을 덜 손상을 주고, 경직이 없고, 더 빨리 적출할 수 있게 한다. In the 1970s, the radial artery was proposed as a coronary artery bypass graft but then was abandoned due to graft occlusion secondary to spasm during harvesting. Development of new pharmacologic antispasmodic agents and minimal traumatic harvesting techniques has led to the revival of the use of the radial artery in coronary artery bypass procedures. Harmonic Scalpel(Ultracision Inc, Smithfield, Rl) offers the surgeon the ability to perform less traumatic, spasm free, and rapid radial artery harvesting.
이현성,김창범,김은석,정한영,박찬혁,김창환,이주성 대한근전도전기진단의학회 2020 대한근전도 전기진단의학회지 Vol.22 No.2
We report a patient with clinical presentation of Lambert-Eaton myasthenic syndrome (LEMS) and paraneoplastic cerebellar degeneration (PCD) prior to the diagnosis of small cell lung cancer (SCLC). A sixty-year-old man suffered from subacute dizziness, ataxia, dysarthria, ptosis, and proximal weakness of limbs. A repetitive nerve stimulation (RNS) test showed a decremental responses at low-frequency (LF) stimulation and an incremental responses at high-frequency (HF) stimulation, suggesting the pattern of LEMS. There was no evidence of a specific lesion on brain magnetic resonance imaging (MRI), so we concluded his cerebellar ataxia, nystagmus and dysarthria were caused by PCD. We suspected that the PCD was coexistent with LEMS as a paraneoplastic neurological syndrome (PNS) associated with SCLC. Initial screening for cancer was negative; however, SCLC was detected through computed tomography of the thorax at four-months follow-up. Early recognition of PNS and repeated screening tests can lead to a timely diagnosis and earlier initiation of treatment of SCLC.