Emerging Insights and New Perspectives on the Nature of Hydrocephalus

e.g., cyst, tumor) can cause an "obstructive hydrocephalus" in which the reabsorption mechanisms are presumably intact, but bulk flow is blocked and the ventricles dilate proximal to the obstruction. In both variants, ventricular dilation is thought to be the end result of hydrostatic pressure build-up within the ventricles.