[Rare location of arachnoid cysts. Extratemporal cysts]

Abstract

The therapeutic management of arachnoid cysts depends largely on its location. Almost 50% of arachnoid cysts are located in the temporal fossa-Sylvian fissure, whereas the other half is distributed in different locations, sometimes exceptional. Under the name of infrequent location arachnoid cysts, a description is presented of those composed of 2 sheets of arachnoid membrane, which are not located in the temporal fossa, and are primary or congenital.

Keywords: Arachnoid cyst; Childhood cysts; Fosa posterior; Intraventricular cysts; Lámina cuadrigémina; Posterior fossa; Quadrigeminal cysts; Quistes araconoideos; Quistes de la infancia; Quistes intraventriculares.