title: Cystic meningioma simulating arachnoid cyst: report of an unusual case.
abstract: The purpose of this paper is to show an unusual case of meningioma simulating arachnoid cyst on CT scan and MRI, diagnosed in a 63-year-old woman evaluated for headache and vision disorders. The meningioma shown is predominantly cystic with a small mural nodule enhancing after gadolinium and exhibiting diffusion restriction. Cystic portion of the tumor is hypodense on CT, and evidences fluid signal intensity on T1- and T2-weighted MR imaging.
authors: Jorge
authors: J
authors: Docampo
authors: Fundación Científica del Sur, Hipólito Yrigoyen 8680, Lomas de Zamora, B1832BQS Buenos Aires, Argentina.
authors: Docampo
authors: D
authors: Jorge
authors: Nadia
authors: N
authors: Gonzalez
authors: Fundación Científica del Sur, Hipólito Yrigoyen 8680, Lomas de Zamora, B1832BQS Buenos Aires, Argentina.
authors: Gonzalez
authors: G
authors: Nadia
authors: Claudio
authors: C
authors: Vazquez
authors: Clínica IMA, Adrogue, B1846DSK Buenos Aires, Argentina.
authors: Vazquez
authors: V
authors: Claudio
authors: Carlos
authors: C
authors: Morales
authors: Fundación Científica del Sur, Hipólito Yrigoyen 8680, Lomas de Zamora, B1832BQS Buenos Aires, Argentina.
authors: Morales
authors: M
authors: Carlos
authors: LSU School of Medicine, Shreveport, LA 71103, USA.
authors: Eduardo
authors: E
authors: Gonzalez-Toledo
authors: Gonzalez-Toledo
authors: GT
authors: Eduardo