Hydrocephalus (from Greek hydros — liquid; kephale — head) — excessive accumulation of CSF in intracranial spaces — cerebral ventricles, subarachnoid slits and cisterns (Fig. 6.1). The hydrocephalus is caused by abnormal CSF resorption, circulation and occasionally production.
Fig. 6.1. CSF circulation system. CSF is formed in the cerebral ventricles, enters through the foramina of Magendie and Luschka the subarachnoid spaces, where it is absorbed mainly through arachnoid (pacchionian) granulations