[Oligodendrogliomas--report of four rare cases].
D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis*; D002551:Cerebral Ventricle Neoplasms / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009837:Oligodendroglioma / Q000175:diagnosis*; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed