title: Atypical xanthoastrocytoma presenting as a meningioma.
abstract: A 15-year-old boy was admitted to excision of a large exophytic right parietal tumor, which, on computed tomography scans and angiograms, revealed marked contrast-medium enhancement in infusion studies. Angiographic studies showed meningeal feeders, which suggested a meningioma. Computed tomography scans demonstrated extensive erosion of the skull, which indicated a slowly growing process. Pathologically it shared many features with pleomorphic xanthoastrocytomas, suggesting that neoplasia of the glia limitans may have a wide range of clinicopathological manifestations, including a favorable long-term prognosis.
mesh_terms: D000293:Adolescent; D001254:Astrocytoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008579:Meningioma / Q000175:diagnosis*