Suprasellar arachnoid pouches.

Abstract

Two children presented with hydrocephalus associated with neurological signs. Plain radiographs of the skull were normal. In both cases carotid angiography demonstrated an obstructive hydrocephalus associated with elevation of the internal cerebral vein, suggesting a suprasellar mass. Air studies demonstrated an air-filled mass extending upwards into the 3rd ventricle from the suprasellar region. In one case the mass was seen occupying a significant part of the lateral ventricles. At operation suprasellar arachnoid pouches were demonstrated and successfully treated.