title: Mesial temporal extraventricular neurocytoma: a rare cause of refractory complex partial seizure.
abstract: OBJECTIVE
  Mesial temporal extraventricular neurocytoma (mtEVN) is a rare cause of refractory complex focal seizures. The characteristics of this clinical entity are discussed in this article.
  
  
  METHODS
  We report two cases of mtEVN and review the related literature, with particular emphasis on radiological characteristics, clinical features, and operative techniques.
  
  
  RESULTS
  After successful surgery, our two cases of mtEVN achieved excellent outcome. Including the cases presented here, a total of three cases of mtEVNs and 11 of neocortical temporal extraventricular neurocytoma (ntEVNs) are reported in the literature. mtEVNs are distinct from ntEVNs with regards to demographics, aetiology, radiological features, and operative techniques.
  
  
  CONCLUSIONS
  mtEVNs and ntEVNs exhibit distinguishing features. Under electrocorticographic monitoring, tailored resection of the neocortical epileptogenic focus, as well as the entire tumour and mesial temporal structures, can yield excellent outcome and satisfactory seizure control.
authors.affiliation: Department of Neurosurgery, Huashan Hospital.
authors.forename: Rui
authors.initials: R
authors.lastname: Feng
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Department of Neurosurgery, Jing'an Branch of Huashan Hospital.
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.affiliation: Department of Neurosurgery, Huashan Hospital.
authors.forename: Jinsong
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Department of Neurosurgery, Jing'an Branch of Huashan Hospital.
authors.forename: Liqin
authors.initials: L
authors.lastname: Lang
authors.affiliation: Department of Neurology, Jing'an Branch of Huashan Hospital.
authors.forename: Bei
authors.initials: B
authors.lastname: Wang
authors.affiliation: Department of Neuropathology, Jing'an Branch of Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China.
authors.forename: Haixia
authors.initials: H
authors.lastname: Bi
authors.affiliation: Department of Neurosurgery, Jing'an Branch of Huashan Hospital.
authors.forename: Xin
authors.initials: X
authors.lastname: Gu
authors.affiliation: Department of Neurosurgery, Jing'an Branch of Huashan Hospital.
authors.forename: Jun
authors.initials: J
authors.lastname: Guo
authors.affiliation: Department of Neurosurgery, Huashan Hospital.
authors.forename: Li
authors.initials: L
authors.lastname: Pan
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D016543:Central Nervous System Neoplasms / Q000150:complications / Q000473:pathology / Q000601:surgery*; D004569:Electroencephalography / Q000379:methods; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018306:Neurocytoma / Q000150:complications / Q000473:pathology / Q000601:surgery*; D012640:Seizures / Q000209:etiology* / Q000473:pathology; D013702:Temporal Lobe / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult
keywords: complex partial seizure; mesial temporal extraventricular neurocytoma (mtEVN); neocortical temporal extraventricular neurocytoma (ntEVN); refractory/intractable epilepsy; surgical treatment