原因不明の一側性聴・平衡障害の背景 : MRI所見から  [in Japanese] Evaluation of Idiopathic Unilateral Auditory and/or Vestibular Symptoms using MRI  [in Japanese]

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Author(s)

    • 道津 充 DOZU Mitsuru
    • 長崎大学医学部耳鼻咽喉科学教室 Department of Otolaryngology, Nagasaki University School of Medicine

Abstract

Thirty-two patients with idiopathic unilateral auditory and/or vestibular symptoms (19 females and 13 males, mean age of 62.2 years) were evaluated with T<SUB>2</SUB>—weighted MR images (MRI). MRI of 18 patients with sudden deafness or vestibular neuronitis (10 females and 8 males, mean age of 54.9 years) were used as controls. Displacement of the basilar artery from the midline were assessed at the level of the internal auditory meatus in the axial view. The displacement was ipsilateral to the symptoms in 26 (81.3%) and contralateral in 6 (18.7%) of 32 patients, whereas it was ipsilateral to the lesion in 4 (22.2%), contralateral in 7 (38.9%) and not recognized in 7 (38.9%) of 18 control patients. Statistical analysis revealed that the patients with idiopathic unilateral auditory and/or vestibular symptoms had ipsilateral displacement of the basilar artery at a significantly high incidence, which may have developed as a result of ipsilateral dolichoectasia due to sclerotic change of the vertebrobasilar artery, leading to a unilateral lesion such as neurovascular compression or chronic blood flow change of the 8th cranial nerve or inner ear.

Journal

  • Equilibrium Research

    Equilibrium Research 58(4), 287-291, 1999-08-01

    Japan Society for Equilibrium Research

References:  9

Cited by:  3

Codes

  • NII Article ID (NAID)
    10008712777
  • NII NACSIS-CAT ID (NCID)
    AN00001485
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03855716
  • Data Source
    CJP  CJPref  J-STAGE 
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