Trichoepithelioma
Pronunciation: TRIK-oh-ep-ih-THEE-lee-oh-mah
A benign hair follicle tumor that can mimic basal cell carcinoma clinically and requires histopathologic confirmation for accurate diagnosis.
Full Definition
Trichoepithelioma is a benign adnexal tumor arising from hair follicle structures, most commonly presenting as small, skin-colored to pink papules on the face, particularly around the nasolabial folds and nose. These lesions are frequently confused with basal cell carcinoma during clinical examination due to their similar appearance, making histopathologic evaluation essential for definitive diagnosis. Multiple trichoepitheliomas may occur in the setting of Brooke-Spiegler syndrome or as part of familial cylindromatosis. While benign, these tumors may be excised for cosmetic reasons or when clinical uncertainty exists regarding the diagnosis.
Usage
Usage note: Often abbreviated as 'tricho' in informal clinical discussion but should be spelled out fully in formal documentation. Critical to distinguish from basal cell carcinoma.
In Context
- "The pathology report confirmed trichoepithelioma rather than basal cell carcinoma, eliminating the need for margin assessment." — pathology report
- "Multiple facial papules in this patient raised suspicion for trichoepitheliomas associated with Brooke-Spiegler syndrome." — clinical assessment note