
Keloid-like Pilomatricoma of the Auricle: A Case Report and Review of Literature
Author(s) -
Dewi Shinta Trilaksmi,
Rice Hanggoro Tri,
Etnawati Kristiana,
Wirohadidjojo Yohanes Widodo
Publication year - 2022
Publication title -
case reports in dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.338
H-Index - 18
ISSN - 1662-6567
DOI - 10.1159/000525895
Subject(s) - single case
Pilomatricoma is a rare benign skin adnexal tumor arising from hair matrix cells. It usually manifests as a firm-to-hard, well-circumscribed, nontender nodule often mistaken as a dermoid cyst. However, its clinical presentation has been reported to mimic keloid. In addition, although it occurs most frequently in the head and neck area, pilomatricoma is rarely reported on the auricle. Herein, we reported a case of pilomatricoma occurring on the posterior part of a 9-year-old girl’s auricle. Unlike classic pilomatricoma, the tumor closely resembled a keloid. Nevertheless, histological examination following excision of the tumor revealed a dermal tumor arranged in solid nests consisting of basaloid and ghost cells along with foreign body reaction, calcification, and ossification, confirming the diagnosis of pilomatricoma. The rarity, atypical clinical presentation, and unique location of this tumor contributed to the misdiagnosis of this case. Therefore, we reviewed previous cases of pilomatricoma of the auricle reported in the literature to provide a comprehensive understanding of this rare entity.