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WHO Classification of Tumours
Trichoepithelioma
Vulva


Definition

Trichoepithelioma is a benign hair follicle neoplasm composed of interconnected nests of basaloid cells that form small keratin-containing cysts ("horn cysts").
Trichoepithelioma most frequently affect the head and neck area; in the vulva, the tumour is rare. It presents as a single or multiple cutaneous nodule(s) with overlying skin abnormalities. Recommended treatment is complete excision

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Tavassoli FA, Devilee P (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Breast and Female Genital Organs.
3rd Edition
IARC Press: Lyon 2003



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