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[P180] A case of bullous prurigo pigmentosa in a healthy woman
( Inho Bae ),( Chanho Na ),( Bongseok Shin ),( Minsung Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1
Prurigo pigmentosa is a rare type of inflammatory dermatosis characterized by symmetrical pruritic erythematous papules that normally resolve with reticular pigmentation. The rash occurs mainly on the central back, scapular, chest, clavicular and nuchal regions. But vesicular or bullous forms have been reported rarely. Some studies have shown that the possibility of an association between prurigo pigmentosa and fasting, pregnancy, ketonemia and diabetic mellitus. A 20-year-old female presented with vesicobullae upon erythematous papuloplaques on the back without preceding disease. She had erythematous lesions on her back for 2 years, and bullous lesions were accompanied 4 months ago. A skin biopsy revealed an intraepidermal bullae filled with neutrophils, perivascular lymphocytes and eosinophils infiltration involving dermis. The clinical and histological features of our case are compatible with bullous prurigo pigmentosa. She treated with doxycycline 100mg twice a day and topical steroid cream. After 2 weeks, the skin lesion improved and post-inflammatory reticulated hyperpigmented patches remained. Herein we present a rare case of bullous prurigo pigmentosa occurring in a healthy woman that successfully treated with doxycycline.
[P493] A case of terra firma-forme dermatosis
( Inho Bae ),( Chanho Na ),( Bongseok Shin ),( Minsung Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1
Terra Firma-Forme Dermatosis (TFFD) is a disease that occurs frequently in adolescence, and is clinically form of dusty, hyperpigmented plaques. TFFD was first reported by Duncan in the 1970s and there are no clear causative factors to date, but there are hypotheses that lesions are made by accumulation of melanin, sebum, sweat and scales. We report a 10-year-old female who presented with hyperpigmented skin lesions on both jaws and around the neck from 2 years ago. The patient was in normal sanitary condition and the lesions were not removed after bathing. The patient had no medical history, weight gain and preceding skin disease. Dermoscopic findings were observed brown papules with an irregular shape and no abnormal findings of melanocytes, blood vessels were shown. We performed KOH test around the neck and result showed normal. The lesions were completely removed by rubbing with an alcohol sponge. TFFD was diagnosed with the above findings, and no recurrence was observed for 6 months. Herein we report a case of TFFD occurring in a young female that successfully treated with alcohol scrubbing. Therefore when we faced with atypical pigmentation disorder, TFFD shoud be considered.
전자의무기록으로부터 진료경로 추출을 위한 연관규칙마이닝 접근 방법
배인호 ( Inho Bae ),김진상 ( Jin Sang Kim ),최상열,김윤년 ( Yoon Nyun Kim ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.1
본 논문에서는 임상의들의 진료데이터를 토대로 진료경로를 동적으로 생성하는 방법을 기술한다. 각 진료단계에서 추출된 규칙들을 토대로 진료경로를 생성하는데, 이를 위해 전자의무기록으로 구성된 임상 데이터를 기반으로 연관규칙마이닝을 이용하여 진료단계별 규칙을 추출하였다. 신뢰성 있는 진료경로의 추출이 이루어지면 의료 서비스의 질을 높이고, 병원 경영의 효율성 증대에 도움을 줄 수 있다.
미세단층촬영기법을 이용한 관상동맥 스텐트의 동물 모델 분석
배인호(Inho Bae),고정태(Jeongtae Koh),임경섭(Kyungseob Lim),박대성(Daesung Park),김종민(Jongmin Kim),정명호(Myungho Jeong) 한국방사선학회 2012 한국방사선학회 논문지 Vol.6 No.2
미세단층촬영기법은 전임상 동물실험 분석시 고해상도의 혈관 영상화를 위한 중요한 수단이다. 이는 조직 분석과 같이 샘플 훼손이 예상되는 분석 작업 이전에 비파괴적인 방법으로 2차원 또는 3차원 이미지 재구성할 수 있는 장점이 있다. 본 연구에서는 생체 이식용 의료기기인 스텐트를 동물모델에서 전임상 분석을 하는데 있어 미세단층촬영기법의 활용방법을 제시하고 금속 스텐트(BMS)와 약물(paclitaxel)이 코팅된 스텐트(DES)의 스텐트 내 재협착정도(ISR)를 토끼 모델을 이용하여 평가하고자 하였다. BMS와 DES를 무작위적으로 토끼의 장골동맥에 식립하고 4주 후에 스텐트가 식립된 주위 혈관을 적출한 다음 스텐트 내강에 조영제를 투여하였다. 미세단층촬영기를 이용하여 50kV/200μA의 X-ray 조사량으로 샘플을 스캔하였다. 정량적 분석을 위해 CTAN 소프트웨어를 이용하여 관심영역을 지정하여 정량적 분석을 수행하였다. 피폭 대상에 따라 각기 다른 CT값(Hounsfied Unit)을 획득할 수 있었으며(스텐트 영역; 약 1.2, 조영제 영역; 0.12~0.17, X-ray 비흡수 영역; 0~0.06), 이를 이용하여 2차원, 3차원적 영상을 획득하고 스텐트 내 재협착 면적을 산출하였다. 조직병리학적 분석의 염증지수에 해당할 수 있는 확장된 스텐트의 크기를 측정하였을 때 BMS와 DES간의 유의한 차이가 나타나지 않았다. 또한 BMS 그룹의 ISR(1.52 ± 0.48mm2)이 DES의 ISR(0.94 ± 0.42mm2)에 비해 약 1.6배 높은 것으로 확인되었다. 이는 DES에 코팅된 paclitaxel이 세포 증식을 억제하여 스텐트 내강으로 증식하는 것을 저해하였기 때문으로 판단된다. 2차원적 분석 결과 BMS의 재협착 분포는 스텐트 중간 영역에서 전면부와 후면부에 비해 비교적 높은 것으로 확인되었다. 이러한 연구 결과로 볼 때 미세단층촬영기법은 비파괴적인 방법으로 분석이 가능하며 정량적 분석을 위한 기존의 복잡한 조직병리학적 분석법의 보조적인 수단으로 활용될 수 있을 것이다. Micro-computed tomography (microCT) is an important tool for preclinical vascular imaging, with micron-level resolution. This non-destructive means of imaging allows for rapid collection of 2D and 3D reconstructions to visualize specimens prior to destructive analysis such as pathological analysis. Objectives. The aim of this study was to suggest a method for ex vivo, postmortem examination of stented arterial segments with microCT. And ex vivo evaluation of stents such as bare metal or drug eluting stents on in-stent restenosis (ISR) in rabbit model was performed. The bare metal stent (BMS) and drug eluting stent(DES, paclitaxel) were implanted in the left or right iliac arteries alternatively in eight New Zealand white rabbits. After 4 weeks of post-implantation, the part of iliac arteries surrounding the stent were removed carefully and processed for microCT. Prior to microCT analysis, a contrast medium was loaded to lumen of stents. All samples were subjected to an X-ray source operating at 50 kV and 200 μA by using a 3D isotropic resolution. The region of interest was traced and measured by CTAN analytical software. Objects being exposed to radiation had different Hounsfield unit each other with values of approximately 1.2 at stent area, 0.12 ~ 0.17 at a contrast medium and 0 ~ 0.06 at outer area of stent. Based on above, further analyses were performed. As a result, the difference of lengths and volumes between expanded stents, which may relate to injury score in pathological analysis, was not different significantly. Moreover, ISR area of BMS was 1.6 times higher than that of DES, indicating that paclitaxel has inhibitory effect on cell proliferation and prevent infiltration of restenosis into lumen of stent. And ISR area of BMS was higher (1.52 ± 0.48mm2) than that of DES (0.94 ± 0.42mm2), indicating that paclitaxel has inhibitory effect on cell proliferation and prevent infiltration of restenosis into lumen of stent. Though it was not statistically significant, it showed that the extent of neointema of mid-region of stents was relatively higher than that of anterior and posterior region in parts of BMS as showing cross-sectional 2-D image. Conclusions. MicroCT enables the non-constructive postmortem analysis of stented arteries. These results suggest that microCT can be utilized as an accessorial tool for pathological analysis.