title: [Neurofibromatosis type 2].
abstract: BACKGROUND
  Neurofibromatosis 2 (NF2) is a rare autosomal dominant disease whose hallmark is the development of bilateral vestibular schwannomas.
  
  
  BACKGROUND
  Other features of NF2 include schwannomas, meningiomas, ependymomas, localized along the central nervous system, schwannomas of the peripheral nerves, cutaneous and ophthalmological manifestations. NF2 can be diagnosed in patients without bilateral vestibular schwannoma with sets of diagnostic criteria. Disease phenotype is variable among patients. Main negative prognostic factors are a young age at onset of symptoms and a high number of tumors at diagnosis. NF2 tumor suppressor gene encodes Merlin/Schwannomin, and is also involved in most sporadic schwannomas and meningiomas. Its functions remains largely unknown.
  
  
  CONCLUSIONS
  Treatment and follow of NF2 patients up require oto-neurosurgical teams experienced in NF2. Yearly and life time surveillance is mandatory. A clinical screening protocol is suggested. Classically, only symptomatic lesions are to be treated. Some authors advocate an early proactive strategy against vestibular schwannoma in order to preserve hearing. When a treatment is advisable, surgery remains the treatment of choice for tumors. Auditory brainstem implant must be taken into account in hearing rehabilitation.
authors: Service de neurochirurgie, Service d'ORL, Hôpital Beaujon, APHP, 100 Boulevard du Général Leclerc, 92118 Clichy.
authors: S
authors: S
authors: Goutagny
authors: D
authors: D
authors: Bouccara
authors: A
authors: A
authors: Bozorg-Grayeli
authors: O
authors: O
authors: Sterkers
authors: M
authors: M
authors: Kalamarides
mesh_terms: D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000235:genetics / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004806:Ependymoma / Q000453:epidemiology / Q000235:genetics / Q000473:pathology; D005260:Female; D016147:Genes, Tumor Suppressor; D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000235:genetics / Q000473:pathology; D016518:Neurofibromatosis 2 / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000235:genetics / Q000473:pathology* / Q000628:therapy; D011379:Prognosis; D011859:Radiography