병변 악화로 오인될 수 있는 피부외용제 사용 후 발생한 접촉성 피부염 1예

우수한 ( Soo Han Woo ) 국군의무사령부 2018 대한군진의학학술지 Vol.49 No.1

The topical ointments are widely used in the military, but not much is known about the contact dermatitis as a side effect caused by main ingredient, base and preservatives. A 21-year-old male presented with erytheamtous scaly patch with excoriation on neck and trunk after application of LamisilⓇ cream. His terbinafine cream treatment was discontinued promptly, and topical corticosteroid and antifungal cream were administered. A military doctors should be aware of the possibility of irritant or allergic contact dermatitis to topical creams, if the condition worsens with use of these ointments.

전신 홍반 루푸스의 첫 증상으로 발생한 결절성 피부 점액증

우수한 ( Soo-han Woo ),박수경 ( Su-kyung Park ),박진 ( Jin Park ),윤석권 ( Seok-kweon Yun ),김한욱 ( Han-uk Kim ) 대한피부과학회 2017 大韓皮膚科學會誌 Vol.55 No.2

It is well recognized that the deposition of mucin occurs in areas of eruption in patients with lupus erythematosus. However, nodular cutaneous mucinosis is regarded as a rare distinctive cutaneous mucinosis in which the mucin deposition occurs in areas other than the sites of eruption in patients with systemic lupus erythematosus and manifests as a clinically specific lesion. Although several cases have been described in the literature, there have been only two reported cases in Korean literature. Thus, we report an interesting case of nodular cutaneous mucinosis that occurred in a young man. A 16-year-old man visited our clinic presenting with multiple soft subcutaneous nodules on his back for 6 months. He denied any other symptoms. Histological examination showed diffuse mucin deposition throughout the superficial and mid-reticular dermis. The abnormal laboratory values were as follows: a positive antinuclear antibody, increased anti-dsDNA, and reduced WBC count and C3 levels. He was diagnosed with nodular cutaneous mucinosis with systemic lupus erythematosus and treated with oral hydroxychloroquine and methylprednisolone. Our report is of interest owing to the rarity of developing nodular cutaneous mucinosis as an initial presentation of systemic lupus erythematosus. (Korean J Dermatol 2017;55(2):116∼119)

피하혈관점액지방종: 증례보고와 문헌고찰

우수한 ( Soo-han Woo ),곽현빈 ( Hyun-bin Kwak ),박수경 ( Su-kyung Park ),박진 ( Jin Park ),윤석권 ( Seok-kweon Yun ),김한욱 ( Han-uk Kim ) 대한피부과학회 2017 大韓皮膚科學會誌 Vol.55 No.10

Angiomyxolipoma is a recently described and rare variant of lipoma that is characterized by the proliferation of adipose tissue with a myxoid stroma and multiple thick and thin-walled blood vessels. A 51-year-old man presented with a tender subcutaneous nodule on his right arm. The tumor was completely removed by excisional biopsy, and the histopathologic features revealed a thin fibrous capsule with incomplete fibrous septa extending into the lesion, dividing it into lobules of different sizes. The fat cells were mature, with a single vacuole and an eccentric nucleus. The vascular component consisted of groups of capillaries and occasional vessels of larger caliber. Erythrocytes were present within the lumen, and myxoid stroma was found. He was diagnosed as having angiomyxolipoma. Herein, we report a rare case of subcutaneous angiomyxolipoma of the arm. We also review and discuss such cases in the literature. (Korean J Dermatol 2017;55(10):680∼683)

유두유륜에서 발생한 색소성 얕은 기저세포암

우수한 ( Soo-han Woo ),박수경 ( Su-kyung Park ),김대우 ( Dae-woo Kim ),노시균 ( Si-gyun Roh ),박진 ( Jin Park ),윤석권 ( Seok-kweon Yun ),김한욱 ( Han-uk Kim ) 대한피부과학회 2016 대한피부과학회지 Vol.54 No.9

Basal cell carcinoma, which characteristically develops on sun-exposed areas such as the head and neck, is the most common cutaneous malignancy. The most important risk factor associated with its development is chronic ultraviolet light exposure, and basal cell carcinomas in non-sun-exposed areas are, therefore, rare. In particular, the nipple-areola complex is an extremely rare site for basal cell carcinomas, and only three cases involving this area have been reported in Korea to date. Here, we report the case of a 66-year-old woman with pigmented superficial basal cell carcinoma in the nipple-areola complex. Typical dermoscopic findings were obtained in this case. (Korean J Dermatol 2016;54(9):735∼738)

3차 의료기관 피부과에 내원한 환자를 대상으로 한 피부과 전문의에 대한 인식도 조사

우수한 ( Soo-han Woo ),박세진 ( Se-jin Park ),정성석 ( Sung-suk Chung ),박진 ( Jin Park ),김한욱 ( Han-uk Kim ),윤석권 ( Seok-kweon Yun ) 대한피부과학회 2016 대한피부과학회지 Vol.54 No.4

Background: Nowadays in Korea, the diagnosis and treatment of the skin diseases by non-dermatologists are surprisingly frequent, and dermatologists often encounter patients who could not distinguish a non-dermatologist from a dermatologist. Thus, misdiagnoses and complications might increase as well. Objective: This study aims to evaluate the awareness and attitudes of patients, who seek treatment for their skin diseases, toward dermatologists and non-dermatologists in Korea. Methods: Between September and December 2014, a total 221 dermatologic outpatients, who visited Chonbuk National University Hospital, were asked to complete a questionnaire. The questions covered its accordance with their visiting intention, practical ability to differentiate a dermatologist from other specialists, criteria for choosing the clinic for skin conditions, consciousness about cutaneous treatment by dermatologists, and others. Results: The ratio of male to female was 1:1.7, and the mean age was 40.5 (±13.18) years. Even though 34.8% of patients answered that they could distinguish between a dermatologist and a non-dermatologist, only 19.0% of the total patients were able to recognize the signboard of dermatologists. The most common criteria for choosing a clinic was if a dermatologist is present to administer treatment. Most patients did not want to visit a nondermatologist for both the treatment of skin disease and cosmetic treatment. Conclusion: Many patients desiring dermatologic and cosmetic treatments wanted to see dermatologist; however, their ability to distinguish dermatologist from non-dermatologist was found to be very low. We suggest that the medical law in Korea needs to be improved such that the specialists are required to display a symbol issued by their own society on their signboards. (Korean J Dermatol 2016;54(4):261~267)

한-러 복합운송 루트 선정에 대한 연구

정우형(Woo Hyung Jung),우수한(Soo Han Woo),박근식(Keun Sik Park) 한국국제상학회 2015 國際商學 Vol.30 No.4

본 연구에서는 한국-러시아 양국간 교역을 하기 위하여 고려할 수 있는 운송 루트별 비교와 가장 경제적인 운송 루트의 제시하는 것을 그 목적으로 하였다. 본 연구에서 이용한 Beresford 모형은 복합운송에서 비용과 시간만을 고려하여 운송루트를 선정하는 방법으로 TSR 루트, 해상운송 루트, 북극해 루트에 대한 운송 비용, 거리를 분석 하였다. 그 결과 직접 운송비는 해상운송 루트, TSR 루트, 북극해 루트 순으로 경제적임을 확인할 수 있었다. 시간에 있어서는 TSR 루트가 가장 경제적인 것으로 분석되었다. 또한 TSR 루트에 대한 문제점으로는 인프라 부족 및 낙후, 서비스 신속성과 안정성의 문제점, 복잡한 행정절차 그리고 화종의 제한이 있다는 것을 확인 하였다. TSR 루트의 문제점이 개선이 된다면 국내 기업이 러시아 및 인근 유럽국가와 거래시 물류비 절감을 제고하여 경쟁력 확보하는데 도움이 될 것이다. Purpose : This study aims to investigate and suggest the most efficient multimodal transport route between Korea and Russia. Research design, data, methodology : This paper used the Beresford model which illustrates transportation cost and time for multimodal routes. Results : The Beresford model analysis suggest that the All water option through the Suez Canal is the most cost-efficient option in terms of cost but the TSR is the time-efficient option. Conclusions : The TSR is found to be the most time-efficient option, but the All water option is normally preferred by transport service providers due to technical and administrative inefficiency and low service quality of the TRS route. So the improvement of service quality of the TSR route through the investment on infrastructure and procedure facilitation is required for more choice of the TSR route.

악성 단순 한선 극세포종

김대우 ( Dae Woo Kim ),우수한 ( Soo Han Woo ),김주익 ( Joo Ik Kim ),황수란 ( Su Ran Hwang ),이진호 ( Chin Ho Rhee ),박진 ( Jin Park ),윤석권 ( Seok Kweon Yun ),김한욱 ( Han Uk Kim ) 대한피부과학회 2015 대한피부과학회지 Vol.53 No.3

Malignant transformation of hidroacanthoma simplex into in situ porocarcinoma, also known as hidroacanthoma simplex with invasive growth, is very rare. Malignant hidroacanthoma simplex generally arises in the elderly and occurs most frequently on the lower extremities and trunk. The gross appearance of the tumor tends to vary, and there are nodular lesions or keratotic plaques with or without erosion and/or ulceration. In some cases, it clinically resembles Bowen`s disease or seborrheic keratosis. Histopathologically, the tumor appears similar to hidroacanthoma simplex, but the cells are atypical with hyperchromatic nuclei, and many are in mitosis. Here we report an extremely rare case of malignant hidroacanthoma simplex that occurred on the right knee of an 84-year-old Korean woman. (Korean J Dermatol 2015;53(3):226∼229)

광범위 절제술로 치료한 선천성 융기피부섬유육종

박수경 ( Su Kyung Park ),우수한 ( Soo Han Woo ),김대우 ( Dae Woo Kim ),황수란 ( Su Ran Hwang ),박진 ( Jin Park ),윤석권 ( Seok Kweon Yun ),김한욱 ( Han Uk Kim ) 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.5

Dermatofibrosarcoma protuberans is a fibrohistiocytic tumor with intermediate malignancy that usually appears in adults. The congenital type is very rare, and only three cases have been reported so far in the Korean literature. A 2-month-old girl presented with a firm reddish-gray nodule on the middle of her back that had been present since birth. Histopathologically, the lesion was composed of fascicles of densely packed uniform spindle cells arranged in a storiform (mat-like) pattern. The cells had hyperchromatic nuclei and rare mitotic figures. On immunohistochemistry, the tumor cells were positive for CD34. Based on these findings, we made the diagnosis of congenital dermatofibrosarcoma protuberans. She underwent wide excision, and there was no evidence of recurrence during 24 months of follow-up. Our report is of interest because of the rarity of congenital dermatofibrosarcoma protuberans and its earliest detection reported in Korea. (Korean J Dermatol 2016;54(5):377∼380)

피부섬유종의 더모스코피 소견과 조직학적 아형의 상관관계에 관한 연구

황수란 ( Su Ran Hwang ),우수한 ( Soo Han Woo ),이진호 ( Chin Ho Rhee ),박진 ( Jin Park ),윤석권 ( Seok Kweon Yun ),김한욱 ( Han Uk Kim ),노시균 ( Si Gyun Roh ) 대한피부과학회 2014 대한피부과학회지 Vol.52 No.10

Background: Dermoscopic features may be useful in verifying the clinical diagnosis and increasing the diagnostic accuracy of dermatofibroma. There have been no systematic analyses of the dermoscopic features of dermatofibroma in Koreans or studies regarding the correlation between dermoscopic features and histologic subtypes. Objective: To investigate the dermoscopic features of dermatofibroma in Koreans and to explore the relationship between the dermoscopic features and histologic subtypes of dermatofibroma. Methods: The study included 83 lesions from 61 patients with dermatofibroma. Dermoscopic examination was performed via hand-held polarized dermoscopy at 10× magnification. Images were documented using a digital camera with a 3-fold optical zoom. Results: The main dermoscopic structures were pigment network (63.9%), white scar-like patch (53.0%), and homogeneous area (50.6%). The frequency of homogeneous area (50.6%), scale (50.6%), ring-like structure (36.1%), exophytic papillary structure (7.2%), and telangiectasia (6.0%) was significantly higher, and globule-like structure (20.5%) and erythema (8.4%) was significantly lower in Koreans than in Caucasians (p<0.05). Eleven dermoscopic patterns including a peripheral delicate pigment network and central white scar-like patch (28.9%) and total delicate pigment network (15.7%) were observed and there was no significant difference compared to Caucasians. Seven histologic types were observed; however, the correlation between dermoscopic features and histologic subtypes was not significant. Conclusion: The most common pattern of dermatofibroma was pigment network and central white scar-like patch in both Koreans and Caucasians. A correlation between dermoscopic features and histologic subtypes in dermatofibroma was not found. These results may be helpful in clinically diagnosing dermatofibroma, especially in Koreans. (Korean J Dermatol 2014;52(10):681∼691)

키워드 네트워크 분석을 활용한 영유아 관찰 관련 연구 동향 분석

한유진(Yoo Jin Han),우수경(Soo Kyeong Woo) 학습자중심교과교육학회 2023 학습자중심교과교육연구 Vol.23 No.15

목적 본 연구는 키워드 네트워크 분석을 통하여 영유아 관찰 관련 연구의 동향을 분석하고자 하였다. 방법 이를 위하여 한국교육학술정보원 데이터베이스(RISS)에서 영유아(유아, 영아, 아동)+관찰’을 주제어로 검색하여 수집한 영유아 관찰 관련 학술지 논문 71편에서 키워드를 추출한 후, 정제한 161개 키워드의 출현 빈도 분석, UCINET 6를 활용한 분석, Netdraw 시각화 분석, 중심성 분석을 실시하였다. 결과 첫째, 영유아 관찰 관련 연구에서 ‘관찰’, ‘유아’, ‘영아’, ‘예비유아교사’, ‘평정척도’, ‘행동’, ‘기록’, ‘놀이’, ‘연구’ 등이 출현 빈도가 높은 주요 키워드로 나타났으며, 이를 시각화한 결과 ‘관찰’, ‘예비유아교사’, ‘유아’, ‘기록’을 중심으로 상호 복잡하게 연결되어 있고, ‘관찰’, ‘유아’, ‘평정척도’, ‘예비유아교사’, ‘기록’, ‘행동’의 키워드 모두 연결중심성, 근접중심성, 매개중심성이 높게 나타났다. 둘째, 지난 30년 간 영유아 관찰 연구에서 도출된 키워드를 분석한 결과 1기(1994~2011년)는 ‘행동’, ‘평정척도’, ‘발달’, 2기(2012~2018년)는 ‘예비유아교사’, ‘평정척도’, ‘음악활동’, 3기(2019~2023.5)는 ‘기록’, ‘놀이관찰’, ‘관찰역량’이 핵심 키워드로 나타났다. 결론 본 연구는 키워드 네트워크 분석을 활용하여 영유아 관찰 관련 연구의 영역과 연결, 시대적 강조점을 살펴보고, 연구 방향의 다변화를 모색한 점에서 의의가 있다. 추후 영유아 관찰과 관련된 활발할 연구를 통하여 현장의 교육적 실천을 지원하는 방안이 모색될 필요가 있다. Objectives This study analyzed research trends of the infant and young child observation using keyword network analysis. Methods To this end, keywords were extracted from 71 academic papers on the infant and young child observation which were preserved in the Korea Educational Information Service Database (RISS) under the theme of “infant-young children (infant, young children) + observation.” After refining the collected keywords, 161 keywords were analyzed by UCINET 6, and then visualized using Netdraw. Results First, in research related to infant and young child observation, “observation,” “infants,” “pre-service teachers,” “rating scales,” “behavior,” “recording,” “play,” and “research” appeared as major keywords with high frequency of appearance. Visualized results showed that “observation,” “pre-service teachers,” “infants,” and “recording” were complicatedly correlated. This results also showed that all the keywords including “observation,” “infants,” “rating scales,” “pre-service teachers,” “recording,” and “behavior” had high levels of degree centrality, closeness centrality, and betweenness centrality. Second, results of examining the keywords derived from the infant and young child observation studies over the past 30 years revealed that major keywords of three periods were as follows: The first period (1994-2011) - “behavior,” “rating scales,” “development,” the second period (2012-2018) - “preservice teachers,” “rating scales,” and “music activities,” and the third period (2019-2023) - “recording,” “play observation,” and “observation capabilities.” Conclusions This study is meaningful in that it investigated areas, connectedness, and periodical emphases of the infant and young child observation studies using keyword network analysis and sought ways of diversifying future research directions. It would be necessary to seek ways to support educational practice in the day-care centers and kindergartens through actively conducting the infant and young child observation.