title: Inferior temporal sulcus approach for amygdalohippocampectomy guided by a laser beam of stereotactic navigator.
abstract: OBJECTIVE
  To describe a surgical technique for a minimally invasive transcortical transventricular amygdalohippocampectomy via the inferior temporal sulcus (ITS) using a stereotactic navigator.
  
  
  METHODS
  Seven patients with medically intractable mesial temporal lobe epilepsy underwent an amygdalohippocampectomy via the ITS. By use of a laser-guided navigation system, the epileptogenic foci of the mesial temporal lobe were resected through a small linear operative route that was made by a brain speculum inserted from the ITS to the anterolateral floor of the temporal horn in the lateral ventricle.
  
  
  RESULTS
  All patients completed at least a 1-year follow-up (range, 14-45 mo) after surgery and had improved neuropsychological parameters as a result of the operation. All patients became seizure-free after surgery. A Humphrey visual field perimeter detected no hemianopsia.
  
  
  CONCLUSIONS
  Combined with the stereotactic navigation system, the ITS approach provides the least invasive amygdalohippocampectomy that preserves optic radiation. This approach seems beneficial especially in patients in whom the epileptic lesions are limited to the anterior mesial temporal lobe.
authors.affiliation: Department of Stereotactic and Functional Neurosurgery, Kaizuka Hospital, Fukuoka, Japan. SuiteCello@aol.com
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Miyagi
authors.forename: Fumio
authors.initials: F
authors.lastname: Shima
authors.forename: Katsuya
authors.initials: K
authors.lastname: Ishido
authors.forename: Takehisa
authors.initials: T
authors.lastname: Araki
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Taniwaki
authors.forename: Iku
authors.initials: I
authors.lastname: Okamoto
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Kamikaseda
mesh_terms: D000293:Adolescent; D000328:Adult; D000679:Amygdala / Q000601:surgery*; D002540:Cerebral Cortex / Q000601:surgery; D002552:Cerebral Ventricles / Q000601:surgery; D003399:Craniotomy / Q000379:methods; D004833:Epilepsy, Temporal Lobe / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006624:Hippocampus / Q000601:surgery*; D006801:Humans; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D038361:Neuronavigation / Q000379:methods*; D017063:Outcome Assessment, Health Care; D012189:Retrospective Studies; D013702:Temporal Lobe / Q000601:surgery*