TY - JOUR T1 - Primary intracranial meningeal and spinal hemangiopericytoma: radiologic manifestations. JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 69 LP - 74 VL - 2 IS - 1 AU - D R Osborne AU - P Dubois AU - B Drayer AU - M Sage AU - P Burger AU - E R Heinz Y1 - 1981/01/01 UR - http://www.ajnr.org/content/2/1/69.abstract N2 - Meningeal hemangiopericytomas are rare but aggressive tumors. All eight patients in this series developed recurrences, three with distant metastases. In six patients a lytic destructive lesion of bone was evident. CT scans in three patients demonstrated diffusely enhancing lesions. No tumor calcification was present. In five of six patients angiography was characterized by multiple irregular tumor vessels, an intense prolonged blush, and the absence of early draining veins. Differentiation of these tumors from meningiomas is discussed. ER -