An Unusual Presentation of Proliferating Trichilemmal Tumor Developing in Psoriatic Plaque: A Case Report | Zendy

Gökçe Işıl Kurmuş | Zendy; Müzeyyen Gönül | Zendy; Filiz Canpolat | Zendy; Can Ergin | Zendy; Bilgihan Açıkgöz | Zendy; Murat Alper | Zendy

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An Unusual Presentation of Proliferating Trichilemmal Tumor Developing in Psoriatic Plaque: A Case Report

Author(s) -

Gökçe Işıl Kurmuş,

Müzeyyen Gönül,

Filiz Canpolat,

Can Ergin,

Bilgihan Açıkgöz,

Murat Alper

Publication year - 2020

Publication title -

yüksek i̇htisas üniversitesi sağlık bilimleri dergisi

Language(s) - English

Resource type - Journals

ISSN - 2717-9257

DOI - 10.51261/yiu.2020.00022

Subject(s) - nodule (geology) , outer root sheath , medicine , scalp , pathology , psoriasis , follicular cyst , dermatology , neoplasm , cyst , biology , immunohistochemistry , paleontology

Proliferating trichilemmal tumor (PTT) is a rare, mostly benign neoplasm which stems from the follicular outer root sheath epithelium. PTT occurs as a subcutaneous cystic nodule slowly enlarging to a larger noduler mass, and is usually localized on the scalp of elderly women. To the best of our knowledge, PTT localized on a psoriatic plaque has not been reported previously. Herein, we report an unusual case of benign PTT arising from a psoriatic plaque on the knee of a 63-year-old male patient. Keywords: proliferating trichilemmal tumor, psoriasis, trichilemmal cyst

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