2012, Number S5
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ABSTRACTIntroduction: proliferating trichilemmal tumor is tumor with follicular isthmus, that usually presents as a solitary nodule on the scalp of elderly women. It is considered a benign neoplasm but with an uncertain behavior because of its local aggressiveness and recidivant tendency. Its main histological characteristic is the presence of trichilemmal keratinization.
Objective: to make a clinical and histopathological characterization of this condition.
Case presentation: we describe a case of a Proliferating trichilemmal tumor on the scalp of a 66-year-old female, presenting as a solitary nodule. Results of the anatomo-pathological study are presented emphasizing in the importance of its precise diagnosis because the possibility of confusion with other cutaneous conditions like epidermal cyst.
Conclusions: proliferating trichilemmal tumor is an entity to keep in mind in the differential diagnosis of tumoral lesions of the scalp with distinctive and specific characteristics.
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