_:vb50947330 . _:vb50947330 "url:http://www.mayoclinic.org/diseases-conditions/hydrocephalus/basics/definition/con-20030706?_ga=1.124310025.2017809229.1415219956"^^ . _:vb50947330 . _:vb50947330 "A cerebral degeneration characterized by an abnormal accumulation of cerebrospinal fluid in the ventricles of the brain, leading to progressive enlargement of the head."^^ . _:vb50947330 . _:vb50947330 . _:vb50947330 . _:vb50947330 "url:http://ghr.nlm.nih.gov/glossary=hydrocephalus"^^ . _:vb50947330 . _:vb50947330 "url:http://en.wikipedia.org/wiki/Hydrocephalus"^^ .