Proliferating Trichilemmal Tumor of the Auricula: A Very Rare Locus

  • Kübra ÇobanEmail author
  • Hampar Akkaya
  • Erdinç Aydın
Clinical Report


Proliferating trichilemmal tumor (PTT) is a rare but morphologically characteristic tumor, derived from the external root sheath. They are commonly localized as a solitary lesion on the scalp. They rarely occur in other regions. PTTs generally behave in a benign fashion, up to 20% of the lesions may undergo malignant transformation into squamous carcinoma. We present an elderly woman with a cystic swelling on the crus of auricular helix diagnosed as PTT. To our knowledge, this is the first case in the English literature, of PTT of the auricula.


Proliferating trichilemmal tumor Aurikula Benign auricular lesions 


Compliance with Ethical Standards

Conflict of interest

The authors of this study declare that they have no conflict of interest.


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Copyright information

© Association of Otolaryngologists of India 2018

Authors and Affiliations

  1. 1.Otorhinolaryngology Department, Medical FacultyBaşkent UniversityAnkaraTurkey
  2. 2.Pathology DepartmentBaşkent UniversityAnkaraTurkey

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