Hydatid cyst of the posterior fossa.
D000328:Adult; D002524:Cerebellar Ataxia / Q000209:etiology; D002526:Cerebellar Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D002533:Cerebral Angiography; D014695:Cerebral Ventriculography; D004443:Echinococcosis / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D006801:Humans