title: Proliferating trichilemmal tumor--case report.
abstract: Proliferating trichilemmal tumor (PTT) is an uncommon neoplasm arising from the follicular isthmus. Its histological characteristic is the presence of trichilemmal keratinization. PTT usually presents as a solitary nodule on the scalp of elderly women. We describe a case of a PTT on the gluteal region (buttocks) of a 16-year-old female, presenting as a solitary nodule.
authors: Serviço de Dermatologia, Universidade Federal do Pará, Belém, PA, Brasil.
authors: Luíza Helena dos Santos
authors: LH
authors: Cavaleiro
authors: Fernanda de Oliveira
authors: Fde O
authors: Viana
authors: Clivia Maria Moraes de Oliveira
authors: CM
authors: Carneiro
authors: Mario Fernando Ribeiro de
authors: MF
authors: Miranda
mesh_terms: D000293:Adolescent; D002081:Buttocks / Q000473:pathology; D004814:Epidermal Cyst / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery