Multiple webs noted at the distal portion of the aqueduct and 4^th ventricle outlet foramina, with a consequent marked tight aqueductal stenosis are suggestive of post-meningitic sequelae. Subsequent active obstructive tetraventricular hydrocephalic changes are noted with transependymal permeation. The absence of flow-void signal intensity on sagittal T2 images at the aqueductal level is a suggestive sign of aqueductal stenosis. MRI CSF flow study is helpful to determine the level of obstructive hydrocephalus.