A Giant Meningioma of the Third Ventricle

Abstract

A case of giant meningioma in the third ventricle in a 48-year-old woman is reported with discussion of the CT findings and the operative approaches.
She was admitted complaining headache and ataxic gait.
Vertebral angiography showed a large, cleary outlined homogeneous tumor stain and a feeder from the anteriorly and superiorly-displaced medial posterior choroidal artery.
CT-scan showed a markedly enhanced high density mass without peritumoral low density and symmetrical enlargement of the lateral ventricle.
An operation was performed through the transcallosal approach following bifrontal craniotomy. The greatest advantage of this approach is that it permits entry into both lateral ventricles and provides direct access to deep regions of the third ventricle through the foramen of Monro.