Trichilemmoma

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| name = Trichilemmoma

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Trichilemmoma (also known as "tricholemmoma"Busam Klaus J., Dermatopathology s.386; 2010 Saunders {{ISBN|978-0-443-06654-2}}) is a benign cutaneous neoplasm that shows differentiation toward cells of the outer root sheath.{{cite book |author=James, William D. |author2=Berger, Timothy G.|title=Andrews' Diseases of the Skin: Clinical Dermatology |publisher=Saunders Elsevier |year=2006 |isbn=0-7216-2921-0 |display-authors=etal}}{{rp|673}}{{cite book |author=Rapini, Ronald P. |author2=Bolognia, Jean L. |author3=Jorizzo, Joseph L. |title=Dermatology: 2-Volume Set |publisher=Mosby |location=St. Louis |year=2007 |pages=1699–1700 |isbn=1-4160-2999-0 }} The lesion is often seen in the face and neck region. Multifocal occurrence is associated with Cowden syndrome, in which hamartomatous intestinal polyposis is seen in conjunction with multiple tricholemmoma lesions.