Familial aqueductal stenosis and basilar impression.
D000328:Adult; D002552:Cerebral Ventricles; D014695:Cerebral Ventriculography; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging / Q000235:genetics*; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging / Q000235:genetics; D008297:Male; D010985:Platybasia / Q000000981:diagnostic imaging / Q000235:genetics*