Papillary meningioma: Clinicopathologic study of seven cases and review of the literature

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Abstract
Seven cases of papillary meningioma are reported. The patients, 3 females and 4 males, were aged between 21 and 69 years. Five tumors were supratentorial, 1 was located in the left temporal bone, and 1 in the thoracic spinal canal. Five patients had local recurrences and died within 1.4 to 9 years of the original operation. In Case 2, one small pulmonary metastatic nodule was found at autopsy. Microscopically, these meningiomas showed foci of necrosis, numerous mitotic figures and local invasiveness. Psammoma bodies were occasional or absent. Forty-six papillary meningiomas have been identified in the literature. Certain histologic features (necrosis, high mitotic index, rich peripapillary reticulin network) and evolutive events (high rate of local recurrence, development of distant metastases) suggest that this aggressive variant of meningioma could form a histologic link between syncytial, fibroblastic, and hemangiopericytic menin giomas. Cancer 58:299–305, 1986.

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