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Four cases of pleomorphic xanthoastrocytoma (PXA) were collected from among 688 glioma patients who underwent operation at the Institute of Neurosurgery, University of Naples Federico II between January 1973 and December 1994. Three were females and one male, ranging in age from 10 months to 65 years. Three tumors were superficial in location, appearing as a meningo-cerebral mass in the temporo-parietal...