The Arnold-Chiari malformation.
D000328:Adult; D001139:Arnold-Chiari Malformation / Q000000981:diagnostic imaging* / Q000503:physiopathology; D003937:Diagnosis, Differential; D005539:Foramen Magnum / Q000000981:diagnostic imaging; D006801:Humans; D009103:Multiple Sclerosis / Q000000981:diagnostic imaging; D014066:Palatine Tonsil / Q000002:abnormalities / Q000000981:diagnostic imaging; D011187:Posture; D012886:Skull / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray