Clinical analysis of following laterial temporal bone resection for 10 external auditory canal carcinomas classified as cT1–2 by the Pittsburgh staging system

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  • Miyazaki Takuya
    Department of Otolaryngology-Head and Neck Surgery, Kokura Memorial Hospital Department of Otolaryngology-Head and Neck Surgery, Kurashiki Central Hospital
  • Iwanaga Ken
    Department of Otolaryngology-Head and Neck Surgery, Kurashiki Central Hospital
  • Mizuta Masanobu
    Department of Otolaryngology-Head and Neck Surgery, Kurashiki Central Hospital
  • Sato Shin-ichi
    Department of Otolaryngology-Head and Neck Surgery, Kurashiki Central Hospital
  • Tamaki Hisanobu
    Department of Otolaryngology-Head and Neck Surgery, Kurashiki Central Hospital
  • Ohno Satoshi
    Department of Otolaryngology-Head and Neck Surgery, Kokura Memorial Hospital
  • Ichimaru Kazuyuki
    Department of Otolaryngology-Head and Neck Surgery, Kokura Memorial Hospital

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  • 外側側頭骨切除術を行った早期外耳道癌（ピッツバーグ分類cT1, 2）10例の検討

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Between 2007 and 2017, we performed lateral temporal bone resection for 10 external auditory canal carcinomas classified as cT1-2 by the Pittsburgh staging system, and examined postoperative complications and treatment outcomes. The clinical stages were T1 in eight cases and T2 in two cases. The histopathological diagnosis was squamous cell carcinoma in all cases. The median follow-up period was 41.6 months. Postoperative histological examinations confirmed margin negative in all cases, thus no case underwent postoperative adjuvant therapy. Postoperative complications were facial nerve paresis, and failure of the sutures and cerebrospinal fluid leakage in one case, respectively. However, both were salvageable and there were no permanent complications. One case with recurrence of neck lymph node underwent neck dissection and was salvaged. In addition, there were no cases of recurrence or distant metastasis. This study revealed that lateral temporal bone resection is safe and a good indicator of external auditory canal carcinoma staged as cT1-2 by the Pittsburgh staging system.

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