title: [Neuronavigation in the surgical planning of callosotomy].
abstract: OBJECTIVE
  To describe the usefulness of 3D computer-assisted preoperative neuronavigation for stereoscopic location of the venous sinuses, arterial branches, and corpus callosum, to extrapolate anatomical landmarks on the surgical field and make decisions before the intervention.
  
  
  METHODS
  A prospective analysis was performed on patients with refractory epilepsy who underwent neuronavigation-assisted callosotomy (BRAIN LAB Dual).
  
  
  RESULTS
  A total of 10 neuronavigation-assisted callosotomies were performed in the year 2014. The ages of the patients (4 males and 6 females) were between 4 and 13 years (mean 7; SD 3.02). The most common indication for callosotomy in our sample was Lennox Gastoux (5 patients). A right parasagittal craniotomy was performed in 8 patients. An anterior two-thirds callosotomy was performed in 8 patients and anterior three-quarters in 2 patients. The mean accuracy of the neuronavigation procedure was less than 2mm. In no cases were there significant intraoperative surgical complications.
  
  
  CONCLUSIONS
  Callosotomy using frameless guided neuronavigation is an accurate and safe technique in patients with epilepsy refractory to surgical resection.
authors.affiliation: Servicio de Neurocirugía, Hospital Pediátrico Baca Ortiz, Quito, Ecuador. Electronic address: carlos.valencia@sen.es.
authors.forename: Carlos
authors.initials: C
authors.lastname: Valencia Calderón
authors.affiliation: Servicio de Neurocirugía, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Castro Cevallos
authors.affiliation: Servicio de Neurología, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Ana
authors.initials: A
authors.lastname: Calderón Valdiviezo
authors.affiliation: Servicio de Neurocirugía, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Roberto
authors.initials: R
authors.lastname: Escobar Dávila
authors.affiliation: Servicio de Neurocirugía, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Fausto
authors.initials: F
authors.lastname: Parra Rosales
authors.affiliation: Servicio de Neurocirugía, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Julio
authors.initials: J
authors.lastname: Quispe Alcocer
authors.affiliation: Gerencia hospitalaria, Hospital Pediátrico Baca Ortiz, Quito, Ecuador.
authors.forename: Catalina
authors.initials: C
authors.lastname: Vásquez Hahn
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003337:Corpus Callosum / Q000601:surgery*; D000069279:Drug Resistant Epilepsy / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D038361:Neuronavigation; D011446:Prospective Studies
keywords: Cirugía de la epilepsia; Corpus callosum; Cuerpo calloso; Epilepsia refractaria; Epilepsy surgery; Neuronavegación; Neuronavigation; Planificación quirúrgica; Refractory epilepsy; Surgical planning