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|hydrocephalus (hī'drō-sěf'ə-ləs) also hydrocephaly |
A usually congenital condition in which an abnormal accumulation of cerebrospinal fluid in the cerebral ventricles causes enlargement of the skull and compression of and injury to brain tissue. If hydrocephalus becomes progressive, a shunt is surgically placed to reduce pressure by conducting fluid away from the brain, usually to the peritoneum.
hydrocephalic adjective (hī'drō-sə-fāl'ĭk)