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Pilomatrixoma
Pilomatrixoma. Close-up of swelling on the neck of a 5-year-old male patient with pilomatrixoma. Pilomatricoma (also known as Malherbe calcifying epithelioma, Malherbe's tumour, or pilomatrixoma) is a cutaneous condition characterised by a benign (non-cancerous) tumour derived from the hair matrix. They are relatively uncommon and typically occur on the scalp, face and upper extremities.
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