Cystic meningioma presenting as a ring lesion.
D003560:Cysts / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged