Third ventricular chordoid glioma with unusual aggressive behavior.

A 50-year-old woman presented with a rare chordoid glioma manifesting as an approximately 4-year history of decreased cognitive function and recent decreased visual acuity. Magnetic resonance imaging showed a 4.5 x 3.5 cm multilobulated strongly enhanced mass in the suprasellar cistern and third ventricle associated with hydrocephalus. The tumor was subtotally removed via a transcallosal approach. Histological examination showed chordoid glioma. Two months later, ventriculoperitoneal shunting was performed for hydrocephalus. The tumor and hydrocephalus recurred after 3 months. She died after 4 months because of deepened mentality and combined pneumonia. This very short duration before recurrence suggests that neuroimaging follow up may be necessary in patients with subtotally removed choroid glioma.