title: Lesson of the month. An unusual brain "tumour".
authors.affiliation: Royal London Hospital, London, UK.
authors.forename: J F
authors.initials: JF
authors.lastname: Geddes
mesh_terms: D000208:Acute Disease; D000328:Adult; D001706:Biopsy; D001932:Brain Neoplasms / Q000473:pathology*; D003711:Demyelinating Diseases / Q000150:complications / Q000473:pathology*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D009837:Oligodendroglioma / Q000473:pathology*; D012640:Seizures / Q000209:etiology / Q000473:pathology