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자가 표피 이식술을 시행한 백반증 320 병변의 임상 양상에 따른 치료 효과 분석
황철 ( Chul Hwang ),박영옥 ( Young Ok Park ),이영 ( Young Lee ),서영준 ( Young Joon Seo ),이증훈 ( Jeung Hoon Lee ),박장규 ( Jang Kyu Park ) 대한피부과학회 2008 大韓皮膚科學會誌 Vol.46 No.12
Background: Autologous epidermal grafting was reported by several authors to be successfully used for the treatment of stable vitiligo lesions. However, there have been only a few studies with a sufficient number of cases and long-term follow up. Objective: The purpose of this study was to evaluate the long-term efficacy of autologous epidermal grafting for the treatment of stable vitiligo lesions. Methods: We evaluated 187 patients (320 lesions) after autologous epidermal graftings using suction blistered epidermis. The effects were analyzed based on age, sex, clinical types, recipient sites, the ablative methods for recipient sites and the time after the operation. Results: Autologous epidermal grafting was more effective for younger patients, for asymmetrical types and when the recipient sites were the head and neck. Pigment production increase until about 3 years after the operation was also found for patients who were evaluated regularly for more than 3 years. Conclusion: Autologous epidermal grafting is a safe, effective treatment modality for stable vitiligo. In order to determine the long-term efficacy of epidermal grafting, doctors should closely observe for at least 3 years after the grafting. (Korean J Dermatol 2008;46(12):1588∼1594)
황철 ( Chul Hwang ),조아영 ( Ah Young Cho ),이영 ( Young Lee ),서영준 ( Young Joon Seo ),박장규 ( Jang Kyu Park ),이증훈 ( Jeung Hoon Lee ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.1
Lichen sclerosus et atrophicus (LSA) is a benign, chronic inflammatory dermatosis that usually affects the female genitalia. It may also involve any other areas, and it is rarely seen on the face, oral mucosa and palm and sole. The lesion of LSA primarily occurs as a whitish or yellowish papule, and later it becomes a well-defined plaque. However, bullous LSA, which has a localized or generalized form, occurs as a rare variant of LSA. The exact prevalence of bullous LSA is uncertain. It generally involves not only the genitalia, which is vulnerable to trauma, but also extragenital sites. We present here a case of extragenital LSA with bullae on the upper back of a 33-year-old female. Histologic examination revealed hyperkeratosis, atrophy, vacuolar alteration of the basal layer and homogenization of the collagen in the upper dermis. In addition, increased collagen bundles and lymphocytic infiltration around the vessels in the lower dermis were also noted. (Korean J Dermatol 2009;47(1):63~66)
황철(Hwang Chul) 국민대학교 법학연구소 2005 법학논총 Vol.17 No.-
The core idea of clinical legal education is that teaching students while they are in professional roles is an essential component of professional education. There are three different branches of clinical education in the United States: in-house live-client clinics, externship programs, and simulation courses. In-house live-client clinics are built around an actual law office, usually located in the law school, that exists for the purpose of providing students with a faculty-supervised setting within which to practice law and learn from the experience. Students learning in externship programs are placed in professional settings external to the law school, including law offices within governmental agencies and nongovernmental organizations. Simulation is a teaching method in which students are put into simulated lawyer roles to perform some aspect of the lawyering process in a controlled setting. These three strains in legal education are equally important. To prepare for clinical legal education is essential for the law school to shape successfully in Korea.
Azathioprine 과민반응으로 발생한 결절홍반양 발진
황철 ( Chul Hwang ),전은경 ( Eun Kyoung Jeon ),조아영 ( Ah Young Cho ),장선혜 ( Sun Hyae Jang ),서영준 ( Young Joon Seo ),박장규 ( Jang Kyu Park ),이증훈 ( Jeung Hoon Lee ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.3
Azathioprine is an immunosuppressant that has been widely used in the prevention of organ post-transplantation rejection, rheumatoid arthritis, inflammatory bowel disease and myasthenia gravis. The adverse effects reported with this drug have been classified as early events that include fever, hypotension, vasculitis and erythema nodosum-like eruptions or as late events that include bone marrow depression, nausea and vomiting. Although erythema nodosum-like eruptions could be useful for recognition of azathioprine hypersensitivity, this eruption has not yet been reported in Korean dermatological literature. We report, herein, a 68-year-old female with myasthenia gravis, who presented with tender, erythema nodosum-like eruptions on both upper and lower extremities 14 days after the first administration of azathioprine. Her symptoms improved 2 days after discontinuation of azathioprine and healed with no scarring change. (Korean J Dermatol 2008;46(3):394∼396)
디지털 컨텐츠 보호를 위한 에이전트기반 포렌식 컴퓨팅 관리
황철(Chul Hwang),황대준(Dae-Joon Hwang) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.1A
지적 재산권 보호 중에서 디지털 저작물 보호는 근래에 활발히 연구되고 있으며 법 과학 분야는 지문감식, 치아감정, DNA 등 많은 분야가 있다. 법과학 분야중 법적용 컴퓨팅(Forensic Computing)에 관한 응용은 새로운 연구 과제이다. 그중에도 디지털 저작물에 대하여 증거를 보전 하고자 많은 연구가 진행 되고 있지만 디지털 저작물에 관하여 네트워크를 통한 능동적 저작물 보호는 미약하다. 현재의 데이터 추출(Extraction), 발굴(Exploitation), 복구, 암호 해독, 패스워스 풀기(Defeat), 미러 이미징 등의 방법 가지고 해결 못하는 경우와 인터넷 상에서 온라인으로 이루어지는 불법 복제에서 결정적 기여(smoking gun)를 찾아 내려고 하는 것이 본 논문에서 해결 하고자 하는 부분이다. 오프라인일 경우도 가능하며 분석된 결과는 변호사/대리인, 법인, 보험회사, 법집행관 등에게 온라인으로 제공한다. 진행 과정은 서버에서 파견 시킨, 미션을 부여 받은 에이전트가 저작물 불법 복제 상황을 트래킹 한 후, 네트워크를 통하여 정해진 시간별로 서버에 전달하며, 법 조항과 매핑시켜서 분석한 다음 서버의 지식베이스에 저장되어 사용자의 요구에 응하는 능동형 디지털 저작물 보호 관리 시스템이다.
황철 ( Chul Hwang ),김대훈 ( Dae Hun Kim ),백승주 ( Seung Ju Baek ),이영 ( Young Lee ),서영준 ( Young Joon Seo ),이증훈 ( Jeung Hoon Lee ) 대한피부과학회 2009 대한피부과학회지 Vol.47 No.9
Branchio-oto-renal (BOR) syndrome is a rare congenital anomaly that is characterized by preauricular pits, branchial fistula and hearing impairment and it is often combined with renal anomalies. BOR syndrome is inherited in an autosomal dominant mode and the mutations of two genes, EYA1 and SIX1, have been identified. We experienced a case of a 14-year-old female who complained of bilateral neck openings and hearing loss that were found at birth the girl`s family had a familial tendency for these features. A skin biopsy from the cervical lesion showed the characteristic features of branchial fistula. We report here on a case of BOR syndrome and we review the relevant literature. (Korean J Dermatol 2009;47(9):1039∼1042)