title: Occipital interhemispheric approach without excision of tentorium for the tumor in the medial temporal region: technical note.
abstract: BACKGROUND
  An occipital interhemispheric approach for the lesions in the middle part of the medial temporal region has been reported. However, this approach usually requires the excision of the tentorium to provide satisfactory exposure. In this case, we used this approach without the excision of the tentorium to remove the parahippocampal gyrus tumor, which was located superolateral to tentorial edge in the middle part of the medial temporal region.
  
  
  METHODS
  A 22-year-old man who had seizures for 3 years presented with a tumor in the right parahippocampal gyrus. The tumor was successfully removed by the occipital interhemispheric approach without the excision of the tentorium. The postoperative course was uneventful.
  
  
  CONCLUSIONS
  An occipital interhemispheric approach without the excision of tentorium is a feasible and safe approach for parahippocampal tumors superolateral to tentorial edge, even in a case where the tumor is deeply located in the middle part of medial temporal region.
authors.affiliation: Department of Neurological Surgery, Tri-service General Hospital, Taipei, Taiwan.
authors.forename: Kuan-Yin
authors.initials: KY
authors.lastname: Tseng
authors.forename: Jiann-Her
authors.initials: JH
authors.lastname: Lin
authors.forename: En-Yuan
authors.initials: EY
authors.lastname: Lin
authors.forename: Hsin-I
authors.initials: HI
authors.lastname: Ma
mesh_terms: D001932:Brain Neoplasms / Q000473:pathology / Q000601:surgery*; D003388:Cranial Fossa, Posterior / Q000033:anatomy & histology / Q000601:surgery; D004388:Dura Mater / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018242:Neuroectodermal Tumors, Primitive / Q000473:pathology / Q000601:surgery*; D019635:Neurosurgical Procedures / Q000379:methods*; D009778:Occipital Lobe / Q000033:anatomy & histology / Q000601:surgery*; D020534:Parahippocampal Gyrus / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000517:prevention & control; D012640:Seizures / Q000209:etiology; D013702:Temporal Lobe / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult