title: Visual and auditory hallucinations revealing cerebellar extraventricular neurocytoma: uncommon presentation for uncommon tumor in uncommon location.
abstract: OBJECTIVE
  Visual and auditory hallucinations in relation to a cerebellar tumor are rarely reported in children. Primary origin of extraventricular neurocytoma (EVN) in the cerebellum is very rare.
  
  
  METHODS
  We report on a case of a cerebellar EVN in a 13-year-old girl with the initial symptoms of psychiatric manifestations for more than 2 months. Magnetic resonance imaging of the brain revealed a patchy enhanced tumor in the paramedian left cerebellar region. No obstructive hydrocephalus was noted.
  
  
  METHODS
  Total surgical removal of the tumor was performed. The tumor was initially diagnosed as an oligodendroglioma. After special immunohistochemical studies, the final definitive diagnosis was an EVN without isocitrate dehydrogenase mutation.
  
  
  CONCLUSIONS
  EVNs located in the cerebellum are extremely rare. We discuss the clinical symptoms and histological-immunohistochemical features of this rare tumor in that rare location.
authors.affiliation: Department of Neurosurgery, School of Medicine, University of Tirana, Albania. Electronic address: g_kaloshi@yahoo.com.
authors.forename: Gentian
authors.initials: G
authors.lastname: Kaloshi
authors.forename: Valbona
authors.initials: V
authors.lastname: Alikaj
authors.forename: Arben
authors.initials: A
authors.lastname: Rroji
authors.forename: Gjergji
authors.initials: G
authors.lastname: Vreto
authors.forename: Mentor
authors.initials: M
authors.lastname: Petrela
mesh_terms: D000293:Adolescent; D002528:Cerebellar Neoplasms / Q000150:complications* / Q000175:diagnosis; D005260:Female; D006212:Hallucinations / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D018306:Neurocytoma / Q000150:complications* / Q000175:diagnosis
keywords: Cerebellum; Extraventricular neurocytoma; IDH mutation; Psychiatric disorders