急性感音難聴で発症した脳幹梗塞の1例  [in Japanese] Brainstem Infarction with Acute Sensorineural Hearing Loss  [in Japanese]

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Author(s)

    • 那須 隆 NASU Takashi
    • 山形大学医学部耳鼻咽喉科教室 Department of Otolaryngology, Yamagata University School of Medicine
    • 中村 正 NAKMURA Tadashi
    • 山形大学医学部耳鼻咽喉科教室 Department of Otolaryngology, Yamagata University School of Medicine
    • 小池 修治 KOIKE Shuji
    • 山形大学医学部耳鼻咽喉科教室 Department of Otolaryngology, Yamagata University School of Medicine
    • 青柳 優 AOYAGI Masaru
    • 山形大学医学部耳鼻咽喉科教室 Department of Otolaryngology, Yamagata University School of Medicine

Abstract

A patient with acute hearing loss and vertigo due to infarction involving the anterior--inferior cerebellar artery (AICA) is reported.<BR>A 64-year-old female complained of sudden-onset, severe, unilateral hearing loss and vertigo without any other neurological deficits. Neuro-otological examinations revealed a horizontal, spontaneous, positional, and gaze nystagmus toward the right. Pursuit eye movement and optokinetic nystagmus were unilaterally impaired and ABR showed the absence of waves II-IV and prolonged I-V interpeak latency difference. Based on finding of neuro-otological examination, brain stem lesion was suspected and neuroradiological examinations were performed. MRI showed a pontine infarction in the AICA area and angiography demonstrated stenosis of the right AICA thus the patient was diagnosed as having AICA syndrome.<BR>The clinical signs of AICA syndrome are occasionally similar to those of inner ear disorders. In such cases, neuro-otological examinations such as ENG and ABR are clinically useful in distinguishing AICA syndrome from inner ear diseases.

Journal

  • Equilibrium Research

    Equilibrium Research 57(3), 289-296, 1998-06-01

    Japan Society for Equilibrium Research

References:  25

Cited by:  5

Codes

  • NII Article ID (NAID)
    10008711068
  • 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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