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타액선암에서 c-kit 유전자에 대한 분자생물학적 연구
서규환(Kyu Hwan Seo),정광윤(Kwang Yoon Jung),우정수(Jung Soo Woo),백승국(Seung Kuk Baek),최성배(Sung Bae Choi),김상희(Sang Hee Kim),김인선(In Sun Kim),권순영(Soon Young Kwon) 대한두경부종양학회 2003 대한두경부 종양학회지 Vol.19 No.2
Objectives: The c-kit gene encodes a transmembrane receptor-type tyrosine kinase, which is known to have a significant role in the normal migration and development of germ cells and melanocytes. In the previous studies of c-kit gene, c-kit expressions showed only in adenoid cystic carcinomas, lymphoepithelioma-like carcinomas and myoepithelial carcinomas, but not in others and mutation was not found in any types of salivary carcinoma. We investigate the c-kit expression which may be useful to differentiating adenoid cystic carcinomas from others, and mutation of the gene which may not be exist nor the mechanism of c-kit activation in salivary carcinomas. Material and Methods: The archival tissue samples from 42 salivary carcinomas of major and minor salivary glands were studied for c-kit expression by immunohistochemistry and gene mutation by polymerase chain reaction amplification and single strand conformational polymorphism. Results: The c-kit expressions were noted in 22/24 adenoid cystic carcinomas, 7/9 mucoepidermoid carcinomas, 2/3 acinic cell carcinomas, 3/4 malignant mixed tumors, and one undifferentiated carcinoma. The mutation of c-kit gene was found in 3/24 adenoid cystic carcinomas, 3/8 mucoepidermoid carcinomas, one acinic cell carcinoma, and 2/4 malignant mixed tumors. Conclusion: c-kit protein overexpression is seen in a variety of salivary gland carcinomas, and the mutation of the gene may be the mechanism of c-kit activation in these neoplasms.
협부피부를 침범한 상악암에서 광범위 절제술 후 광배근 이중도서형 유리피판을 이용한 재건술 1예
권윤환(Yun Hwan Kwon),서규환(Kyu Hwan Seo),이승훈(Seung Hoon Lee),동은상(Eun Sang Dhong),권순영(Soon Young Kwon) 대한두경부종양학회 2004 대한두경부 종양학회지 Vol.20 No.1
An advanced maxillary sinus cancer requires an extensive ablation that results an extensive facial deformity, including a skin defect. Reconstruction has to be considered in a radical maxillectomy, especially with skin defect may be accomplished in one stage with a microsurgical free transfer of a latissimus dorsi flap. A man of right maxillary sinus cancer, squamous cell carcinoma, 47 years old of age, had soft tissue invasion of the cheek region. He underwent a radical maxillectomy with extensive skin excision. The maxillectomy and skin defects were reconstructed with the double skin island latissimus dorsi myocutaneous free flap. The cosmetic result and the functional outcome of the nose were thought to be considerably satisfied.
김천권(Cheon Kwuan Kim),서규환(Kyu Hwan Seo) 한국지방자치학회 2000 한국지방자치학회보 Vol.12 No.2
The main purpose of this paper is to investigate a desirable direction for metropolitan development in the age of globalization. The basic idea that underlies this paper is that a new development model for urban space must be examined in global age because there are many differences in scopes and scales of socio-economic activities between nation-state society and global society. This paper suggests that the four main urban conditions must be achieved for stable growth in the global age : flexible urban structure, connectivity to global network, regional differentiation and superior environmental amenity. The Paper concludes by critically evaluating recent changes in metropolitan society, regarding globalization with two-faced phenomena, chance and uncertainty, that the urban policy for rapid growth and innovation tends to produces cities with great danger, unidentified, unsustainable and polarized.