A Case of Bilateral Vocal Cord Abductor Paralysis Caused by Idiopathic Non-inflammatory Myopathy Localized in the Posterior Cricoarytenoid Muscle

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  • Okada Ayumi
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Saigusa Hideto
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Kadosono Osamu
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Maeda Yasuyo
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Yamamoto Keisuke
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Ito Hiroyuki
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center
  • Yamamoto Masahiko
    Department of Otolaryngology and Pediatric-Otolaryngology, Tokyo Women's Medical University, Yachiyo Medical Center

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Other Title
  • 後輪状披裂筋に限局した特発性非炎症性ミオパチーにより両側声帯外転障害をきたした1例
  • 症例 後輪状披裂筋に限局した特発性非炎症性ミオパチーにより両側声帯外転障害をきたした1例
  • ショウレイ コウリンジョウヒレツキン ニ ゲンキョク シタ トクハツセイ ヒエンショウセイ ミオパチー ニ ヨリ リョウガワ セイタイ ガイテンショウガイ オ キタシタ 1レイ

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Abstract

<p>The subject was an 83-year-old male who had suffered repeated dyspnea attacks with inspiratory stridor starting 8 years earlier. He had a previous history of two tracheotomies. Because his glottic opening width had gradually decreased, a “Retina” with one-way speech valve had been inserted after the second tracheotomy one year ago. The patient consulted a hospital to have the tracheal stoma closed. Laryngoscopic findings demonstrated that the vocal cords were drawn into the trachea after abduction during inspiration, and the glottic opening narrowed. Electromyography of the posterior cricoarytenoid muscle using hooked wire electrode showed a clear myogenic change. We confirmed clear denaturation confined to the posterior cricoarytenoid muscle and performed the Woodman method of vocal lateralization. Pathological findings revealed non-inflammatory myopathy of the posterior cricoarytenoid muscle. We closed the tracheal stoma to keep the widened airway in good condition. Recurrence of tracheal stenosis has not occurred after one and a half years post-surgery.</p>

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