4Guhrie BL, Ebersold MJ, Scheithaner BW, et al. Meningeal heman- giopericytoma:histopathological features,treatment, and long-term follow-up of 44 cases[J]. Neurosurgery, 1989, 25:514-522.
5Klehues P, Burger PC, Scheithauer BW. The WHO classification of brain tumors[J]. Brain Pathol, 1993, 3:25.
6Ecker RD, Marsh WR, Pollock BE, et al. Hemangiopericytoma in the central nervous system:treatment,pathological feature, and long-term follow up in 38 patients[J]. Neurosurg, 2003, 98(6): 1182.
7Soyuer S, Chang EL, Selek U, et al. Intracranialna eningeal hem angioperi cytoma:the role of radiotherapy:report of 29 cases and review of the literature[J]. Cancer, 2004, 100(7): 1491.
8Sibtain NA, Butt S, Connor SER. Imaging feature of central nervous system haem angiopericytomas[J]. Eur Radiol, 2007, 17(7): 1685.
9Akiyama M, Sakai H,Onoue H, et al. Imaging intracranial haemangiopericytom a study of seven cases [J]. Neuromdiology,2004, 46(3): 194.
10Stout AP, Murray MR. Hemangiopericytoma: a vascular tumor featuring Zimmerman's pericytes [J]. Ann Surg, 1942, 116(1): 26-33.
