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Analysis of acne-related judicial precedents from 1997 to 2018 in South Korea
( Ji Hoon Yang ),( Soo Ick Cho ),( Su Hwan Shin ),( Won Lee ),( So Yoon Kim ),( Dae Hun Suh ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2
Background: Medicolegal disputes are increasing in practical medicine. Acne is a common problem but is usually related to cosmetic problems such as acne scars. Medications or procedures related to acne could lead to medical malpractice. Objectives: To analyze medical litigation associated with acne or acne scar in South Korea. Methods: Acne-related judgements were searched using the Supreme Court of Korea’s Written Judgment Management System based on the keywords “acne” or “acne scar.” Results: Eleven cases were selected as litigated cases of acne or acne scar. Eight cases (72.7%) were related to acne scar and three (27.3%) were related to acne. Treatment modalities such as peeling (n = 6), laser treatment (n = 3), photodynamic therapy (n = 1), and antibiotic (n = 1) resulted in lawsuit. Claimed sequelae of the treatment were hyperpigmentation (n = 5), scar worsening (n = 5), erythema (n = 3), skin bumps (n = 1), and liver transplant (n = 1). Eight cases (72.7%) were awarded to the plaintiff, and the others were dismissed. The average awarded amount was 16,801,324± 24,452,486 (mean±standard deviation) Korean Won. Conclusion: Various treatments for acne or acne scar can cause medical disputes. Unnecessary litigation could be prevented if simple measures such as history taking, choosing proper procedure, and adequate management after the procedure along with sufficient informed consent were performed.
Analysis of gallbladder polypoid lesion size as an indication of the risk of gallbladder cancer
Ji Eun Sung,Chang Woo Nam,Yang Won Nah,Byung Sung Kim 한국간담췌외과학회 2014 한국간담췌외과학회지 Vol.18 No.1
Backgrounds/Aims: Recent advances in ultrasonography have contributed to the early detection of gallbladder cancer. We attempted to predict the progression of the disease by comparing the sizes of polypoid lesions, and we suggest that the size of the lesion would be a useful guideline to determine an appropriate primary surgical approach for polypoid lesions of the gallbladder. Methods: We have retrospectively analyzed 253 patients that, during the operation period from January 2009 to December 2011, had had ultrasonographically detected gallbladder polypoid lesions, and who underwent cholecystectomy at Ulsan university hospital. We have analyzed the demographic data of the patients, the preoperative size of polypoid lesions, and pathologic findings. Results: Of a total of 253 patients, 235 patients had benign lesions, and 18 patients had malignant lesions. Among the malignant polyp patients, 11 had pT1 cancer, 6 had pT2 cancer, and 1 had pT3 cancer. The average size of polypoid lesions was 9.1±3.1 ㎜ and that of malignant lesions was 28.2±16.4 ㎜. The receiver operating characteristic (ROC) curve of the benign and malignant groups shows that 14.5 ㎜ is the optimal point of prediction of the malignancy. Of a total of 18 patients of GB cancer, 11 had pT1 and the average size of their polypoid lesions was 20.5±5.8 ㎜ 7 had pT2 with a size of 39.1±20.7 ㎜. ROC curve analysis of the pT1 and pT2 groups shows that 27 ㎜ would be the optimal point to predict T2 and above cancer. Conclusions: In the case of an early cancer, curative treatment can be achieved through a simple and minimally invasive laparoscopic cholecystectomy. We attempted to predict early cancer occurrence among polypoid lesions of the gallbladder using the simplest standard, size. Although there are some limitations, size can be a simple and easy way to evaluate polypoid lesions of the gallbladder.
Self-Assembled Fibroblasts-Populated Dermal Equivalent Based on Fibrin Matrix
( Ji Yeon Seo ),( Hyeong In Kim ),( Dong Lim Seol ),( Min Young Choi ),( Young Chul Yoon ),( Soon Ho Cheong ),( Won Hee Jang ),( Young Il Yang ) 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.1
We tried to develop a simple method to fabricate fibrin-based dermal equivalent and determine the effect of culture condition on cell growth and gene expression. Human dermal fibroblasts(DFs) were encapsulated within fibrin and fabricated DFs-populated fibrin lattice(FPFL). In Group I, DFs-populated fibrin lattice(FPFL) was detached from culture plate immediately after polymerization and cultured in free floating(FF) condition for 8 days. In Group II, FPFL was cultured in attached condition for 3 days and then FF condition for 5 days. In Group III, FPFL was cultured in attached condition for 7 days and then cultured in FF condition for 1 day. The cell growth and gene expression were significantly higher in Group III than those of Group I and Group II(p<0.01), but lattice contraction was lowest. We used attached-delayed-released process to fabricate self assembled dermal equivalent. First, FPFL was cultured in attached condition for 7 days and detached in peripheral margin which resulted in contraction and spontaneous release of FPFL. The released FPFL cultured for 1 day for compaction, organization, and self assembly of lattices. We could successfully fabricate a self-assembled dermal equivalent based showing stretchable mechanical property, incorporation of angiogenic factors and newly synthesized extracellular matrices.
Won-Il Kim(김원일),Jin-Kyoung Kim(김진경),Ji-Hyock Yoo(류지혁),Min-Kyoung Paik(백민경),Sang-Won Park(박상원),Oh-Kyung Kwon(권오경),Moo-Ki Hong(홍무기),Jay-E Yang(양재의),Jeong-Gyu Kim(김정규) 한국토양비료학회 2009 한국토양비료학회지 Vol.42 No.1
휴폐광산 인근 주민에 대한 위해영향을 평가하는데 있어서 벼 품종에 따른 변이를 파악하기 위하여 농경지 토양 및 쌀의 비소, 카드뮴, 구리 및 납의 함량을 분석하였다. 중금속 오염농경지에서 조사된 잠재적인 인체노출경로로서 오염된 농경지 및 쌀을 통한 경구섭취 및 피부접촉을 통한 품종간 일일평균 인체노출량(ADD)을 산정하였다. 비발암성 위해도 평가로 노출경로별 중금속의 위험비율인 HQ 지수와 모든 노출경로를 총합한 중금속의 위험지수인 HI 값을 US-EPA D/B를 활용하였다. 벼 품종간 HI 지수는 23.6∼34.3으로 전품종에서 높은 잠재적 위해성으로 평가되었는데 DA 품종이 가장 낮은 반면 TB 품종이 가장 높은 HI 값을 보였다. 쌀 소비에따른 비소의 발암성 위해도 평가는 품종간 2.0E-03∼3.5E-03을 보여 미국 EPA에서 정한 위해성 기준인 만명중 한명 이상으로 높게 나타났다. 발암성 위해도에 대한 품종간 비교에서 DA 품종이 가장 낮은 반면 TB 품종이 가장 높은 HI 값을 보였다. 이러한 결과는 위해성 평가가 중금속 오염에 안전한 품종을 선발하는데 유용한 도구로서 활용할 수 있음을 보여준다. Heavy metal pollution may be one of the most serious challenges confront crop production and human health. Therefore, the selection of heavy metal tolerance cultivars which adapted to the contaminated fields will introduced a suitable solution for management this critical environmental risk. The objectives of this research is to assess human health risk using geochemical analyses and exposure assessment of heavy metals in rice cultivars. Risk for inhabitants in the closed mine area was comparatively assessed for As, Cd, Cu and Pb in 10 rice varieties as a major exposure pathway. The average daily dose (ADD) of each heavy metal was estimated by analyzing the exposure pathways to rice and soil. For the non-carcinogenic risk characterization, Hazard Quotient (HQ) and Hazard Index (HI) were calculated using toxicity indices provided by US-EPA IRIS. The different rice varieties revealed a wide range of HI values from 23.6 to 34.3, indicating that all rice varieties have a high potential toxic risk. The DA rice variety showed the lowest HI value while the TB rice variety the highest. The probabilities of cancer risk for As via rice consumption were varied with rice varieties ranging from 2.0E-03 to 3.5E-03 which exceeded the regulatory acceptable risk of 1 in 10,000 set by US-EPA. The DA rice variety also showed the lowest value while the TB rice variety gave the highest value. Our results indicate that risk assessment can be contribute to screen the pollution safe rice cultivars in paddy fields affected by the mining activity.