title: [Trichogenic trichoblastoma].
abstract: A case of rare follicular tumor, which occurred on nasal root of a 73-year-old man, is presented. Histologically one finds a tumor, localized in dermis and subcutaneous tissue, consisting of keratinous cysts, irregular shaped or antlerlike epithelial cell nests and surrounding stroma. The cell nest consists of basaloid cells. Moreover rudimentary hair matrix structures, sebaceous gland lobules and apocrine sweat ducts are observed. This tumor corresponds to trichogenic trichoblastoma as proposed by Headington.
mesh_terms: D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000473:pathology* / Q000648:ultrastructure
vernacular_title: Trichogenes Trichoblastom.