摘要：

Recurrence of intracranial meningiomas after surgery has long been recognized, but there is still no consensus about factors responsible for recurrence. To better understand such factors, we analysed data on 276 patients with meningiomas who were treated at our institution from 1976 to 1990 (mean follow-up=5.1 years). Effects of sex, tumour histology, tumour site, and radiotherapy on recurrence were closely studied. Using World Health Organization criteria to define malignancy, 254 of the tumours were benign and 22 were atypical or malignant. For data analysis, distinction was made between <img src="/content/J1T5G15LQ2343645/xxlarge8220.gif" alt="ldquo" align="MIDDLE" border="0">recurrence<img src="/content/J1T5G15LQ2343645/xxlarge822gif" alt="rdquo" align="MIDDLE" border="0"> (i.e., reappearance of tumour after total resection) and <img src="/content/J1T5G15LQ2343645/xxlarge8220.gif" alt="ldquo" align="MIDDLE" border="0">regrowth<img src="/content/J1T5G15LQ2343645/xxlarge822gif" a

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