Posttraumatic hydrocephalus--a retrospective review.

The authors retrospectively reviewed all cases of acquired hydrocephalus admitted to the Institute of Neurological Sciences, Glasgow, Scotland, within a 5-year period and encountered 17 cases of posttraumatic hydrocephalus. These represented 0.7% of 2374 cases of severe head injury. Hydrocephalus became symptomatic within 1 year from the time of injury in 16 of 17 cases. Meningitis, traumatic subarachnoid hemorrhage, posterior fossa mass, supratentorial clot with contralateral ventricular dilatation, and craniotomy contributed to the development of posttraumatic hydrocephalus. After shunting, eight patients (50%) improved markedly and four (25%) slightly.