title: Clinical features of delayed endolymphatic hydrops and intralabyrinthine schwannoma : An imaging-confirmed comparative case series. English version.
abstract: BACKGROUND
  The aim of this study was to compare the clinical history and audiovestibular function test results of patients suffering from intralabyrinthine schwannoma or delayed endolymphatic hydrops (DEH).
  
  
  METHODS
  Five patients diagnosed with intralabyrinthine schwannoma by magnetic resonance imaging (MRI) and five patients diagnosed with DEH by locally enhanced inner ear MRI (LEIM) were retrospectively studied.
  
  
  RESULTS
  All patients with intralabyrinthine schwannoma or DEH initially presented with hearing loss. Vertigo occurred in two patients with intralabyrinthine schwannoma and in all patients with DEH. While audiometry achieved poorer results for patients with intralabyrinthine schwannomas, vestibular function tests revealed normal results in about half of the patients in both groups.
  
  
  CONCLUSIONS
  Patients with intralabyrinthine schwannomas may present with clinical symptoms similar to patients suffering from other inner ear disorders such as delayed endolymphatic hydrops and they may obtain similar findings in audiovestibular function tests. High-resolution magnetic resonance imaging with locally applied contrast agent may provide evidence of both underlying pathologies.
authors: German Center for Vertigo and Balance Disorders, Grosshadern Medical Center, University of Munich, Marchioninistr. 15, 81377, Munich, Germany. claudia.jerin@med.uni-muenchen.de.|Department of Otorhinolaryngology - Head and Neck Surgery, Grosshadern Medical Center, University of Munich, Munich, Germany. claudia.jerin@med.uni-muenchen.de.
authors: C
authors: C
authors: Jerin
authors: German Center for Vertigo and Balance Disorders, Grosshadern Medical Center, University of Munich, Marchioninistr. 15, 81377, Munich, Germany.|Department of Otorhinolaryngology - Head and Neck Surgery, Grosshadern Medical Center, University of Munich, Munich, Germany.
authors: E
authors: E
authors: Krause
authors: Institute of Clinical Radiology, Grosshadern Medical Center, University of Munich, Munich, Germany.
authors: B
authors: B
authors: Ertl-Wagner
authors: German Center for Vertigo and Balance Disorders, Grosshadern Medical Center, University of Munich, Marchioninistr. 15, 81377, Munich, Germany.|Department of Otorhinolaryngology - Head and Neck Surgery, Grosshadern Medical Center, University of Munich, Munich, Germany.
authors: R
authors: R
authors: Gürkov
mesh_terms: D000328:Adult; D000368:Aged; D057210:Delayed Diagnosis; D003937:Diagnosis, Differential; D018159:Endolymphatic Hydrops / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000150:complications* / Q000000981:diagnostic imaging* / Q000473:pathology; D009464:Neuroma, Acoustic / Q000150:complications* / Q000000981:diagnostic imaging* / Q000473:pathology; D012189:Retrospective Studies
keywords: Delayed endolymphatic hydrops; Intralabyrinthine schwannoma; Labyrinth; Sensorineural hearing loss; Tinnitus; Vertigo; Vestibular schwannoma