5VENKATACHALAM M A,GREALLY J G.Fine structure of glomus tumor:similarity of glomus cells to smooth muscle[J].Cancer,1969,23:1176-1184.
6FLETCHER C D.Hemangiopericytoma-a dying breed? Reappraisal of an‘entity 'and its variant:a hypothesis[J].Curr Diagn Pathol,1994,(1):19-23.
7BARNES L,EVESON J W,REICHART P.WHO classifica-tion of tumours.Pathology and genetics of head and neck tumours[M].Lyon:IARC Press,2005:43-44.
8FLETCHER C D,UNNI K K,MERTENTS F.World Health Organization classification of tumours.Pathology and genetics of tumours of soft tissue and bone[M].Lyon:IARC Press,2002:135-136.
9CATALANO P J,BRANDWEIN M,SHAN D K,et al.Sinonasal hemangiopeticytomas:a clinicopathologic and immunohistochemical study of seven cases[J].Head Neck,1996,18:42-53.
10COMPAGNO J,HYAMS V J.Hemangiopericytoma-like intranasal tumors.A clinicopathologic study of 23 cases[J].Am J Clin Pathol,1976,66:672-683.
