外耳道アミロイドーシスの2例 Two Cases of Amyloidosis of the External Auditory Canals

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Amyloidosis is a relatively rare disease that is defined by extracellular deposition of amyloid. Although it causes disorders of various tissues and organs including the head and neck, little is known about the involvement of amyloid in external ear disorder. Here we report two case studies of amyloidosis in the external auditory canals. One patient was a 66-year-old female with ear itching. Multiple brownish nodules were seen in both ear canals. The other patient was a 46-year-old female with bilateral hearing loss. She had been receiving chronic hemodialysis treatment for 20 years. Her physical examination demonstrated brownish masses that occupied both ear canals and 30-dB conductive hearing loss in pure tone audiometry. The masses in both of her ears were excised to resolve the hearing impairment. Both patients' pathological findings for the ear masses were positively stained by Congo red, and they were diagnosed with amyloidosis. Immunohistochemical staining was performed in both cases. We identified the first case as localized cutaneous amyloidosis, and the second case as dialysis-related amyloidosis.

収録刊行物

  • 耳鼻咽喉科臨床

    耳鼻咽喉科臨床 96(12), 1049-1054, 2003-12-01

    The Society of Practical Otolaryngology

参考文献:  17件中 1-17件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10012546268
  • NII書誌ID(NCID)
    AN00107089
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    00326313
  • NDL 記事登録ID
    6779033
  • NDL 雑誌分類
    ZS43(科学技術--医学--耳鼻咽喉科学)
  • NDL 請求記号
    Z19-421
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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