The Arnold-Chiari malformation.
D001139:Arnold-Chiari Malformation / Q000000981:diagnostic imaging / Q000196:embryology / Q000266:history / Q000473:pathology / Q000601:surgery; D002557:Cerebrospinal Fluid Shunts; D049672:History, 19th Century; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery; D011859:Radiography