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<p>A patient had an iatrogenic epidermal neck cyst following tympanoplasty by post auricular approach, that caused cortical erosion of mastoid tip and cholesteatoma in mastoid tip cell region. A patient presented seven months after right ear Type 1 tympanoplasty with otorrhea and a progressive neck swelling. Clinical evaluation revealed a central tympanic membrane perforation and mucopurulent discharge. A well defined multilobulated cystic neck swelling from post auricular region and along the right sternocleidomastoid muscle was noted. CECT neck and temporal region demonstrated neck cyst and a soft tissue density in the mastoid tip with cortical defect. The patient underwent revision tympanoplasty, cortical mastoidectomy with complete cyst excision by post-auricular approach. This report highlights meticulous surgical technique and postoperative follow-up of patients after ear surgeries. The unusual extension to involve mastoid air cell adds new subset in existing category of secondary acquired cholesteatoma.</p>

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Iatrogenic Mastoid Tip Cholesteatoma and Epidermal Inclusion Cyst Neck Following Tympanoplasty

  • 期刊论文

  • 发表日期：

    2026年3月10日

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  • Mahendra Chouhan,
  • Ritu Somra

摘要

A patient had an iatrogenic epidermal neck cyst following tympanoplasty by post auricular approach, that caused cortical erosion of mastoid tip and cholesteatoma in mastoid tip cell region. A patient presented seven months after right ear Type 1 tympanoplasty with otorrhea and a progressive neck swelling. Clinical evaluation revealed a central tympanic membrane perforation and mucopurulent discharge. A well defined multilobulated cystic neck swelling from post auricular region and along the right sternocleidomastoid muscle was noted. CECT neck and temporal region demonstrated neck cyst and a soft tissue density in the mastoid tip with cortical defect. The patient underwent revision tympanoplasty, cortical mastoidectomy with complete cyst excision by post-auricular approach. This report highlights meticulous surgical technique and postoperative follow-up of patients after ear surgeries. The unusual extension to involve mastoid air cell adds new subset in existing category of secondary acquired cholesteatoma.