Perforating calcifying epithelioma of Malherbe with a rapid evolution

Area of Science:

• Dermatopathology
• Oncology

Background:

• Calcifying epithelioma of Malherbe (CEM), also known as pilomatricoma, is a benign skin tumor typically presenting in the dermis.
• Rarely, CEM can exhibit rapid evolution and atypical clinical features, posing diagnostic challenges.

Observation:

• A unique case of CEM with rapid progression and epidermal perforation is presented.
• The clinical presentation was atypical, not initially suggesting a diagnosis of CEM.
• Histopathological examination revealed characteristic features of CEM alongside peculiar findings.

Findings:

• Epithelial strands of shadow cells, partially calcified, were observed in the upper dermis.
• These structures appeared to be in contact with and potentially eliminated through the perforated epidermis.
• The study discusses the acute presentation of CEM and the mechanism of epidermal perforation.

Implications:

• This case highlights the importance of histopathological examination for diagnosing atypical CEM presentations.
• Understanding the mechanism of epidermal perforation in this context may offer insights into perforating dermatoses.
• Further research into rare presentations of pilomatricoma can refine diagnostic criteria and treatment approaches.