Pilomatricoma
Pilomatricoma
Pilomatricoma (pronounced: pie-low-ma-trick-oh-ma), also known as Calcifying Epithelioma of Malherbe, is a benign skin tumor that originates from the hair follicle matrix. The term 'Pilomatricoma' is derived from the Latin words 'pilo-' meaning hair, and '-matricoma' meaning matrix tumor.
Etymology
The term 'Pilomatricoma' was first used in 1961 by Forbis and Helwig to describe a tumor that was previously known as 'Calcifying Epithelioma of Malherbe'. The term 'Calcifying Epithelioma of Malherbe' was coined by Chenantais in 1922, named after Arthur Malherbe who first described the tumor in 1880.
Clinical Presentation
Pilomatricomas typically present as a solitary, firm, painless nodule under the skin. They are most commonly found on the head, neck, and upper extremities. The overlying skin may appear normal or have a bluish-red discoloration.
Diagnosis
The diagnosis of Pilomatricoma is often made clinically, but can be confirmed with a skin biopsy. Histologically, the tumor is characterized by the presence of shadow cells, basaloid cells, and areas of calcification.
Treatment
The treatment of choice for Pilomatricoma is surgical excision. Recurrence after complete excision is rare.
Related Terms
- Shadow cells: A type of cell seen in histological examination of Pilomatricoma.
- Basaloid cells: A type of cell seen in histological examination of Pilomatricoma.
- Calcification: The process of deposition of calcium salts in a tissue.
- Skin biopsy: A procedure where a small sample of skin is removed for examination under a microscope.
External links
- Medical encyclopedia article on Pilomatricoma
- Wikipedia's article - Pilomatricoma
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