Relationship Between the Recurrence of Intracranial Ependymomas and the Grade of Malignancy

摘要: The histogenetic classification of ependymomas among primary brain neoplasms was controversially discussed for a long time [4, 5, 8, 18–20, 22, 24, 26, 27]. Their origin from ependymal cells, which arise directly the neural tube 6, 13, 25], however, justifies their as gliomas in group neuroepithelial tumors [27, 28]. As previously reported, prognosis predominantly depends on grade malignancy based histomorphological features anaplasia [10–12]. In present series we have studied whether recurrent tumor growth — known other is determined by malignancy.