6Casadei GP,Komori T,Scheithauer BW,et al.Intracranial parenchymal schwannoma:a clinicopathological and neuroimaging study of nine cases[J].J Neurosurg,1993,79:217～222.
7Zagardo MT,Castellani RJ,Rees JH,et al.Radiologic and pathologic findings of intracerebral schwannoma (Review).AJNR,1998,19:1290～1293.
8Kuratsu J.UshioU.Epidemiological study of primaryintracranial tumors:a regional survey in Kumamoto Prefecture in southern part of Japan[J].J Neurosurg,1996,84:946～950.
9Tsuiki H,Kuratsu J,Ishimaru Y,et al.Intracranial intrapar-enchymal schwannoma:report of three cases[J].Acta Neu-rochir (Wien),1997,139:756～760.
