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송흥섭,유상영,우희정,김법종,이의돈,이경희,유한석 대한부인종양학회 2006 Journal of Gynecologic Oncology Vol.17 No.4
Rhabdomyosarcoma is a malignant tumor of mesenchymal origin. It is the most common soft tissue sarcoma of childhood and approximately 250 new cases are diagnosed in the U.S. each year. The most common sites for rhabdomyosarcoma are the head and neck(parameningeal, orbit, paryngeal etc.), the extremities, and the genitourinary tract. Histologically, it can be classified into embryonal, alveolar, pleomorphic, and undifferentiated. Alveolar subtype accounts for approximately 25%. Alveolar rhabdomyosarcoma is very rare and its prognosis is very poor. Especially, cases that reported from vulva are extremely rare, and informations regarding treatment and prognosis are not standardized. We present a case of a girl with alveolar rhabdomyosarcoma of vulva with a review of a literature. 횡문근육종은 원시 간엽 세포 유래의 횡문근의 고도의 악성종양으로 소아에서 발생하는 가장 흔한 연부조직 종양이다. 미국에서는 매년 약 250건의 새로운 환자들이 보고되고 있으며 두경부, 사지, 비뇨생식계등에 흔하게 발생한다. 비뇨생식기에 발생하는 비율은 약 20%정도로 보고되고 있다. 조직학적으로는 배아성, 폐포성, 다형성, 미분화등의 4가지로 나뉘어지며 그 중 배아성이 가장 흔하며 폐포성은 약 25% 정도를 차지한다. 폐포성 횡문근육종은 전체적으로 매우 드물며 예후도 매우 좋지 않다. 특히 외음부에 발생한 예는 보고된 예가 매우 적어 아직까지 표준화된 치료나 예후에 대한 자료가 적은 상태이다. 저자들은 16세 여성의 외음부에 발생한 폐포성 횡문근육종 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.
송흥섭,김은표,박경진,류주하,Song Heung Sub,Kim Eun Pyo,Park Kyung Jin,You Joo Ha 한국분말야금학회 2004 한국분말재료학회지 (KPMI) Vol.11 No.5
A new concept of tungsten heavy alloy composite was suggested and manufactured in this study for the kinetic energy penetrator. The composite heavy alloy was composed of two parts, the center was molybdenum added heavy alloy compositions which were designed to promote the self-sharpening effect and outside was conventional heavy alloy in order to sustain the severe stress condition in the muzzle during the firing. The center part showed an intergranular and brittle mode at tungsten/tungsten interfaces by which self-sharpening effect could be activated. On the other hand, that of outside showed conventional ductile fracture mode under high strain rate condition. From the sub-scale penetration test, the depth of penetration in heavy alloy composites showed greater values than those of conventional tungsten heavy alloys. It is suggested that the heavy alloy composite could be considered as one of the future penetrator materials.