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성대경(Dae Kyung Sung),정종철(Jon Cheol Jeong),김호성(Ho Sung Kim),서지훈,김성범,최재욱(Jae Uk Choi),이계혁(Gye Hyeok Lee),류근신(Geun Shin Ryu) 대한구강악안면외과학회 2000 대한구강악안면외과학회지 Vol.26 No.3
Hemangiopericytoma is uncommon vascular neoplasm that arises from pericytes arround the capillary walls. It was first described as a distinct vascular neoplasm by Stout and Murray in 1942 The anatomic distribution is widespread throughout the body, with approximately one third occur in the head and neck. No sex predilection has been found. Although middle age appears to be the most prevalent time of onset, this neoplasm has been found in all age groups. The differentiation between benign and malignant hemangiopericytoma can be difficult. Although the majority of these tumors are benign, there are malignant variants that can metastasize. Metastasis of seemingly benign tumors may appear year of decade later, so long term close follow-up is needed The treatment of choice is complete surgical excision of the tumor. Despite their vascular origin, these tumors are relatively radioresistant. Radiation therapy is reserved for inoperable metastases or treatment of postoperative surgical fields. Here we present a case of hemangiopericytoma occuring on the Lt. buccal mucosa.
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柳根信,李重達 한양대학교 의과대학 1991 한양의대 학술지 Vol.11 No.1
Six cases of immature teratoma of the ovary with neural component are analyzed and grouped into 3 grades according to the amount of neural epithelium. Immunohistochemical reaction of GFAP, vimentin, NSE and S-100 protein on a variety of neural tissue as a tumor component is studied. The neural epithelium within the immature teratoma is arranged in tubules, rosettes and diffuse sheets, which are often associated with astrocytes and glial fibers on their background. Vimentin is found in a marked increase, whereas NSE reveals a mild increase in the neuroblasts. No detectable amount of GFAP and S-100 proteins present in the neural epithelium. Astrocytes, ependymal cells, and glial fibers are all reactive to GFAP, vimentin, NSE, and S-100 protein. The positive reaction is helpful to find neural epitelium with no difficulty.
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