Anetodermic pilomatricoma: clinical, histopathologic, and sonographic findings

Vázquez‐Osorio, Igor; García, Susana Mallo; Rodríguez‐Díaz, Eloy; Gonzalvo‐Rodríguez, P.

doi:10.5070/d3233034296

Cited by 9 publications

(16 citation statements)

References 6 publications

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“…Keloid-like pilomatricoma was not clearly described, but it was characterized by excessive growth beyond the original lesion area and reported to comprise only 1.2% of all variants of pilomatricoma [ 4 ]. Few reports have included this clinical presentation as a variant of anetodermic pilomatricoma [ 28 , 29 ].…”

Section: Discussion/conclusionmentioning

confidence: 99%

Keloid-like Pilomatricoma of the Auricle: A Case Report and Review of Literature

et al. 2022

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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.

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Section: Discussion/conclusionmentioning

confidence: 99%

Keloid-like Pilomatricoma of the Auricle: A Case Report and Review of Literature

et al. 2022

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“…Anetodermic pilomatricoma generally manifests as a firm subcutaneous nodule with atrophic, wrinkled, keloid-like or pseudobullous brownish skin, and affects the upper arm, shoulder and trunk in young females ( 2 , 3 ). Histopathologically, pilomatricoma is located in the dermis or subcutis and is composed of basaloid cells and ghost cells with focal calcification ( 4 ).…”

Section: Discussionmentioning

confidence: 99%

“…Histopathologically, pilomatricoma is located in the dermis or subcutis and is composed of basaloid cells and ghost cells with focal calcification ( 4 ). Lymphatic dilation, disruption of collagen fibres, and absence of elastic fibres in the supra-tumoural dermis are the additional features of anetodermic pilomatricoma ( 2 , 4 ). In line with 3 reported cases ( 3 ), mild acanthosis and basal pigmentation in the overlying epidermis and increased mast cells in the supra-tumoural dermis were also found in our case.…”

Section: Discussionmentioning

confidence: 99%

“…Preoperative diagnosis of pilomatricoma is accurate in 16% of 1,521 lesions ( 4 ). Its differential diagnoses include epidermal cyst, dermatofibroma, Spitz naevus, dermal melanocytic naevus, basal cell carcinoma (BCC) and melanoma ( 1 , 2 , 6 ). Dermoscopic features of nonanetodermic pilomatricoma include yellowish-white structures and streaks, reddish homogeneous areas, and polymorphous (hairpin, linear irregular, and dotted) vessels with ulceration and blue-grey structureless areas ( 6 – 9 ), of which irregular white structures/ streaks and polymorphous/atypical vessels are more common ( 6 ).…”

Section: Discussionmentioning

confidence: 99%

“…Dermoscopically, an epidermal cyst on the face displayed irregular white structures and brown-blue central pigmentation with an erythematous border ( 11 ), but it can be excluded the diagnosis of pilomatricoma owing to the absence of polymorphous or atypical vessels. Although lateral compression often yields dimple-sign in dermatofibroma ( 12 ), vertical pressure also leads to central depression ( 2 ). The irregular whitish structures of pilomatricoma resemble the white scar-like patch of dermatofibroma, but a peripheral delicate pigment network is absent in pilomatricoma ( 6 ).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Dermoscopic and Immunohistochemical Observations in Anetodermic Pilomatricoma: A Case Report

Chen¹,

Li²,

Huang³

et al. 2020

Acta Derm Venereol

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Top Advances in Dermatologic Ultrasound

Wortsman

2022

J of Ultrasound Medicine

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The advances in dermatologic ultrasound have been significantly influenced by the development of high‐ and ultrahigh‐frequency probes, the provision of guidelines for performing the examinations, and a growing number of publications in the field. This review analyzes the most significant contributions that have impacted the daily practice of dermatologists in recent years. This includes the advances in anatomical detection and the patterns of benign and malignant cutaneous tumors, inflammatory dermatologic conditions, vascular anomalies, nail abnormalities, and aesthetic procedures. The knowledge of these advances is a primer for the operators of these examinations.

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Anetodermic pilomatricoma: clinical, histopathologic, and sonographic findings

Cited by 9 publications

References 6 publications

Keloid-like Pilomatricoma of the Auricle: A Case Report and Review of Literature

Keloid-like Pilomatricoma of the Auricle: A Case Report and Review of Literature

Dermoscopic and Immunohistochemical Observations in Anetodermic Pilomatricoma: A Case Report

Top Advances in Dermatologic Ultrasound

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