title: February 1997--9 year old girl with hydrocephalus.
abstract: A nine year old girl presented with nausea vomiting and hydrocephalus. Imaging studies demonstrated a large right thalamic mass with areas of cystic change or necrosis. Sections of resected material showed perivascular pseudorosettes, necrosis, endothelial proliferation, numerous mitoses, densely cellular areas and numerous foci with a clear-cell morphology. This case is used to illustrate the features of anaplastic ependymomas and to discuss the relationship of the histologic features to prognosis.
authors.affiliation: University of Pittsburgh, Department of Pathology (Neuropathology), USA.
authors.forename: R L
authors.initials: RL
authors.lastname: Hamilton
mesh_terms: D001932:Brain Neoplasms / Q000150:complications / Q000175:diagnosis*; D002648:Child; D004806:Ependymoma / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology*