title: Intralabyrinthine schwannomas.
abstract: OBJECTIVE
  To describe characteristic features of intralabyrinthine schwannomas (ISs) that may be used to distinguish them from other otologic disorders with similar symptoms so that appropriate evaluation and management can be instituted.
  
  
  METHODS
  This study was a retrospective case review.
  
  
  METHODS
  This study was conducted at a university-affiliated urban tertiary care medical center and a university medical center in the same city.
  
  
  METHODS
  Seven patients with ISs were included in this study.
  
  
  METHODS
  Tumor removal versus observation and monitoring with periodic magnetic resonance imaging (MRI) scans was investigated.
  
  
  METHODS
  Hearing, vertigo, and tumor growth were measured.
  
  
  RESULTS
  Four of seven patients with ISs underwent surgical excision with no evidence of tumor recurrence. The remaining three patients are being followed-up with repeat MRI that has demonstrated minimal or no tumor growth.
  
  
  CONCLUSIONS
  ISs can be detected in early stages if MRI is performed in patients with unilateral sensorineural hearing loss without vertiginous symptoms typical of Meniere's disease. Although complete surgical excision can be achieved readily with labyrinthectomy, observation and monitoring with rep--MRI is an option for some patients.
authors.affiliation: Department of Otology/Neurotology, Washington Hospital Center, DC 20010, USA.
authors.forename: D C
authors.initials: DC
authors.lastname: Fitzgerald
authors.forename: K M
authors.initials: KM
authors.lastname: Grundfast
authors.forename: D A
authors.initials: DA
authors.lastname: Hecht
authors.forename: A S
authors.initials: AS
authors.lastname: Mark
mesh_terms: D000328:Adult; D001300:Audiometry, Evoked Response; D004428:Ear Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D007758:Ear, Inner / Q000473:pathology* / Q000601:surgery; D016057:Evoked Potentials, Auditory, Brain Stem; D005260:Female; D005500:Follow-Up Studies; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013069:Speech Reception Threshold Test; D014717:Vertigo / Q000175:diagnosis