PROLIFERATING TRICHILEMMAL TUMOR. A CASE REPORT

DOI
  • Kamei Yukari
    Department of Otolaryngology and Head and Neck Surgery, Osaka City University Graduate School of Medicine Department of Otolaryngology, Tane General Hospital
  • Teranishi Yuichi
    Department of Otolaryngology and Head and Neck Surgery, Osaka City University Graduate School of Medicine
  • Takano Sakurako
    Department of Otolaryngology and Head and Neck Surgery, Osaka City University Graduate School of Medicine
  • Sunami Kishiko
    Department of Otolaryngology and Head and Neck Surgery, Osaka City University Graduate School of Medicine

Bibliographic Information

Other Title
  • 耳下腺腫瘍が疑われた頸部増殖性外毛根鞘性嚢腫の1例

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Description

<p>Proliferating trichilemmal tumor (PTT) is a rare skin tumor and is more common in women than in men. More than 90% of PTT lesions arise on the scalp, but here we report a case of PTT on the right lower ear. </p><p>The patient was a 40-year-old man who had been aware of the tumor for about 10 years. He came to our hospital after the lesion had increased in size over the previous six months. An elastic hard mass measuring approximately 3cm in diameter was observed on the lower part of the right ear. We initially suspected a parotid tumor, but imaging did not show typical signs of a parotid tumors, Warthin tumor, or pleomorphic adenoma. The tumor was resected, and a histopathological diagnosis of PTT was made based on the characteristic presence of trichilemmal keratinization. </p><p>PTT can recur and become malignant, but it has not recurred in our patient during the 3-year postoperative follow-up period. We are continuing to monitor the patient’s course with careful follow-up examinations. This case serves as a reminder that skin tumors or skin appendage tumors can occur in the head and neck area.</p>

Journal

  • JIBI INKOKA TEMBO

    JIBI INKOKA TEMBO 65 (2), 74-78, 2022-04-15

    Society of Oto-rhino-laryngology Tokyo

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