title: Clinical observation of fourth ventricle tumor in 40 adults.
mesh_terms: D000293:Adolescent; D000328:Adult; D002551:Cerebral Ventricle Neoplasms / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000601:surgery; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography