title: Pilomyxoid astrocytoma of the brainstem.
abstract: A pilomyxoid astrocytoma is a recently described tumor that occurs predominantly in the hypothalamic-chiasmatic region and is rarely found elsewhere. It has similar features as pilocytic astrocytomas, but has distinct histological characteristics and a poorer prognosis. A pilomyxoid astrocytoma is an aggressive tumor, and increased awareness is necessary with a suspect case. We present the first case of a pilomyxoid astrocytoma of the brainstem described after the newest World Health Organization classification of central nervous system tumors.
authors.affiliation: Division of Neurosurgery.
authors.forename: Francisco Otavio
authors.initials: FO
authors.lastname: Pereira
authors.forename: Ismael Augusto
authors.initials: IA
authors.lastname: Lombardi
authors.forename: Adriana Yuki
authors.initials: AY
authors.lastname: Mello
authors.forename: Flavio Ramalho
authors.initials: FR
authors.lastname: Romero
authors.forename: Luis Gustavo
authors.initials: LG
authors.lastname: Ducati
authors.forename: Roberto Colichio
authors.initials: RC
authors.lastname: Gabarra
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Zanini
keywords: brain tumor; pediatric; pilomyxoid astrocytoma