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)

화력발전소 폐쇄와 항만인력 고용의 공정한 전환

우수한(Su-Han Woo),김두리(Du-Ri Kim) 한국무역학회 2020 貿易學會誌 Vol.45 No.5

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)

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)

Bordetella bronchiseptica 백신항원의 면역원성 평가

우수한,문선영,변윤영,주홍구,Woo, Su-Han,Moon, Sun-Young,Byon, Yun-Young,Joo, Hong-Gu 대한수의학회 2014 大韓獸醫學會誌 Vol.54 No.2

Bordetella (B.) bronchiseptica is a causative agent of swine atrophic rhinitis that promotes colonization of the mucous membrane of the swine nasal cavity by Pasteurella (P.) multocida. Mixed infection with B. bronchiseptica and P. multocida leads to growth inhibition of pigs, resulting in significant economic loss. There are many commercial vaccines for atrophic rhinitis, including B. bronchiseptica as a killed vaccine antigen (Ag). However, the immunogenicity of killed B. bronchiseptica Ag has not yet been elucidated; therefore, this study was conducted to investigate the immunogenicity of killed B. bronchiseptica Ag and the type of immune response it induces. In vitro assays using mouse spleen cells and flow cytometry revealed that B. bronchiseptica Ag induced high proliferation capability of lymphocytes, especially B lymphocytes, and the proliferating cells showed a significant response to interleukin (IL)-2. B. bronchiseptica Ag also enhanced the production of IL-12, a representative cytokine for cell-mediated immunity. In vivo experiments using mice showed that the injection of B. bronchiseptica Ag markedly induced Ag-specific antibody. Taken together, these results indicate that B. bronchiseptica Ag has high immunogenicity by itself.

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)

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)

해운기업의 선박투자 의사결정 방식에 관한 연구

김경수 ( Kyoung Su Kim ),박근식 ( Keun Sik Park ),우수한 ( Su Han Woo ) 한국물류학회 2014 물류학회지 Vol.24 No.2

해운산업은 변동성이 높은 특징을 가지고 있다. 운임시장과 선박시장의 주기성은 해운투자자들에게 성공의 기회를 주기도 하지만 실패의 이유가 되기도 한다. 본 연구에 의하면 한국해운기업의 선박투자 의사결정자들은 과학적 분석에 의한 의사결정 뿐만 아니라 휴리스틱 및 시장정서에 의한 의사결정에 상당한 중요성을 두고 있는 것으로 나타났다. 휴리스틱과 시장정서에 의한 의사결정은 빠르고 간편하여 경제적이고 때로는 과학적 의사결정보도 좋은 성과를 낼 수도 있지만, 단지 이러한 방법은 경험과 본능적 감에 의존하다 보니 오류가 발생할 가능성이 높으며, 집단의 심리로서 사람은 때때로 비합리적이기 때문에 집단 의견에 무비판적으로 동의하여 잘못된 선박투자 의사결정을 내릴 수도 있는 것이다. 또한 기업규모가 작은 중소기업 및 오너쉽 경영형태가 대기업 및 전문경영인 체제 보다 과학적 분석에 의한 의사결정방식에 중요도가 낮은 것으로 나타났다. The shipping industry is characterized by high volatility. The freight and ship market industry can provide its investors with a chance to succeed, but it can also become a reason for them to fail on their shipping investments. The present study has found that Korea’s shipping companies have been highly influenced by, and put emphasis on, heuristic market sentiments and the analysis of a ship’s investment-making potential. Moreover, because the shipping industry requires a decision-maker to make prompt decisions, errors can occur due to a speedy analysis. Making a decision under shipping circumstances has to equate for high volatility, and investment patterns are sometimes limited. Small-sized, tramper, and ownership-based shipping companies are less influenced by analytical shipping investment patterns. Korea’s shipping industry structure is primarily small, tramper and ownership-based, and a number of those companies have rapidly increased. They currently face bankruptcy or are suffering from a liquidity crunch. In light of this fact, it is important for Korean shipping companies to reduce heuristic market sentiments. These companies should consider pursuing analytical ship-investment patterns through accurate information gathering and the use of trained experts.

해상운송 기반 한중 전자상거래 기종점 분석연구

함숙연 ( Ham Sook-yeon ),우수한 ( Woo Su-han ) 한국해운물류학회(구 한국해운학회) 2018 해운물류연구 Vol.34 No.1

본 연구는 해상운송 기반으로 한 한중 전자상거래 화물의 기종점 분석을 통해 거래패턴을 파악하고, 해상운송의 경쟁력을 분석하는 것을 목적으로 한다. 이를 위해 현재 위동해운을 통해 전자상거래 화물에 대한 해상운송 서비스를 이용하고 있는 포워딩의 수입적하목록 신고내역을 근거로 기점별, 종점별, 품목별 분석을 하였으며, 해상운송을 이용하는 요인에 대해 알아보고자 포워딩 업체와의 인터뷰를 진행하였다. 분석 결과 중국 산동성 지역에서 한국 경기도 지역으로 디지털/가전제품이 가장 많이 운송되었으며, 비용측면에서는 5kg 이상의 중량 화물일 경우 항공 대비 운송비가 40% 이상 저렴한 것으로 나타났다. 특히 산동성 위해의 경우 페리선과 화물선이 모두 운항됨에 따라 데일리 서비스가 가능하여 해상운송이 항공 대비 가격 및 운송시간에 대해 충분한 경쟁력이 있다는 결론을 도출하였다. 이 연구를 통해 전자상거래 화물에 대한 해상운송은 구간과 중량화물의 경우 타 운송수단에 비해 우위를 가지고 있음이 확인되었다. 이를 기반으로 전자상거래업체에게는 가격 경쟁력을 높일 수 있고 선사는 새로운 교역구조에서 새로운 서비스를 개발하여 시장을 확대해 나갈 수 있을 것이다. Maritime transport service for E-commerce trade between Korea and China commenced in 2015. Existing literature focuses on the E-commerce type and the current status of E-commerce market in Korea and China and has not considered transport modes and services for cross-border e-commerce. Therefore this study conducted origin-destination(O-D) analysis of E-commerce cargo between Korea ad China carried by car-ferry transportation. In addition, an interview study was undertaken to obtain contents validity of the results of the O-D analysis. The import documents of forwarding companies which handle E-commerce cargoes using Weidong Ferry were used for the O-D analysis based on maritime transportation. The results are as followa: Digital/home appliance products are the main products while the main O-D route is from Shandong province to Gyeonggi province. The interviews suggest that car-ferry transportation is competitive for cargoes weighing more than 5kg by 40% than air transportation. A new market for this service can be between Weihai in Shandong province and Gyeonggi province as both car-ferry and container services are available. Maritime transport for e-commerce cargo can help E-commerce firms improve price competitiveness and diversify transport service alternatives.