[Sudden hearing loss in acoustic neuroma]

Zhonghua Er Bi Yan Hou Ke Za Zhi. 1997 Oct;32(5):277-9.
[Article in Chinese]


To avoid misdiagnosis and mistherapy of acoustic neuroma, 104 cases of acoustic neuroma treated between 1986 and 1995 were retrospectively reviewed. Among them, 23 patients (24 ears, 23%) presented with sudden hearing loss as the starting symptoms. The clinical and audiological analysis demonstrated that 54.2% of the ears showed hearing loss over 71 dB HL, and all ears had deteriorated ABRs. -SP/AP was measured in nine ears, seven showed -SP/AP greater than 0.4. Acoustic reflex was negative in all 11 ears tested, and 94.4% of the ears showed abnormal ENG. The rate of positive CT scan was 88.8%. The diagnosis was made with CT pneumo-encephalography or MRI in those with negative CT result. It was concluded that for patients with sudden deafness, ABR should be used as a routine test. When ABR was abnormal, CT scan of the internal auditory meatus was needed.

Publication types

  • English Abstract

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Audiometry, Pure-Tone
  • Evoked Potentials, Auditory, Brain Stem
  • Female
  • Hearing Loss, Sudden / etiology*
  • Humans
  • Male
  • Middle Aged
  • Neuroma, Acoustic / complications*
  • Neuroma, Acoustic / diagnosis
  • Retrospective Studies
  • Tomography, X-Ray Computed