Primary intraventricular meningiomas of the fourth ventricle.
D000328:Adult; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D002551:Cerebral Ventricle Neoplasms / Q000000981:diagnostic imaging*; D014695:Cerebral Ventriculography; D005260:Female; D006801:Humans; D008297:Male; D008579:Meningioma / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011011:Pneumoencephalography; D014711:Vertebral Artery / Q000000981:diagnostic imaging