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- 저자 : 장 학(Hak Chang) (검색결과 2 건)
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서효석(Hyo Seok Seo),서상원(Sang Won Seo),장충현(Choong Hyun Chang),강민구(Min Gu Kang),장 학(Hak Chang) 대한두경부종양학회 2008 대한두경부 종양학회지 Vol.24 No.2
Objectives :DFSP(Dermatofibrosarcoma protuberans) is an uncommon, slowly growing, locally invasive malignant tumor that usually presents as a painless, often long-standing mass arising in the dermis of skin. It occurs most frequently on the trunk and proximal parts of the limbs, less commonly in the head and neck region and has a frequent tendency to recur after surgical excision. Clinically, the initial appearance of the tumor similar to that of benign tumor such as keloid and dermatofibroma. Therefore, accurate clinical diagnosis and adequate surgical excision are important. Materials and Methods :We experienced 6 patients of DFSP in head and neck during the recent 6 years, 5 male and 1 female patients. The age of the patients ranged from 31 to 66. As reconstructive methods, the authors used cervicofacial flap, trapezius musculocutaneous flap, TRAM flap, anterolateral thigh free flap and skin graft. Results :The patients were followed up after operation from 24 to 79 months and all remained free of disease except one case, who occurred at forehead area. Conclusion :We present the experience of 6 cases of DFSP occurred in head and neck. We obtained satis-factory results with appropriate diagnosis and treatment which wide excision with surgical margins 3-5cm. We also present an operative plan of this locally aggressive and highly recurrent tumor.
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두피에 발생한 혈관육종의 수술시 Mapping Biopsy의 유용성
강민구(Min Gu Kang),박종림(Jong Lim Park),김명국(Myung Good Kim),장 학(Hak Chang),민경원(Kyung Won Minn),고경석(Kyung Suck Koh) 대한두경부종양학회 2007 대한두경부 종양학회지 Vol.23 No.1
Objectives :Cutaneous angiosarcoma is an infrequent but aggressive neoplasm involving the skin of the face and scalp. Unfamiliarity with the clinical manifestations of cutaneous angiosarcoma frequently leads to misdiagnosis and delay in treatment. Complete surgical resection requires the performance of preoperative staging biopsies to determine the true extent of the neoplasm. Intraoperative frozen section analysis to determine the adequacy of the surgical resection is unreliable due to the high false negative rate. Material and Methods :In five scalp angiosarcoma cases, mapping biopsies were performed at far from the suspected edge of the neoplasm. On permanent pathology, we obtained tumor free margin with occasional focal involvement of the tumor. Results :Frozen-section analysis of the resected margins is inconclusive, for the subtle diagnostic features of angiosarcoma are distorted by the tissue processing required for frozen-section analysis. The characteristic dermal vessels lined by their malignant cells are collapsed by the freezing process. This results in a high rate of false-negative reports and possibly leads to incomplete resection of the neoplasm. Conclusion :Our recommendation is to establish the margins of the tumor by performing preoperative eval-uations by mapping biopsies.
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