title: Trichoblastoma arising within an apocrine poroma.
abstract: A poroma is a benign neoplasm composed of poroid and cuticular cells and is thought to derive from the eccrine duct. Several recent reports have described cases with sebaceous, follicular, and apocrine differentiation, suggesting a possible apocrine origin, however. Trichoblastoma is a rare benign tumor composed of germinative cells related to the folliculosebaceous-apocrine unit. We report a unique case of a trichoblastoma arising within a poroma with apocrine and sebaceous differentiation. To our knowledge, this exceptional association has not been described previously and may support the theory of the apocrine origin of poromas.
authors.affiliation: Departamento de Anatomía Patológica, Hospital Universitario, Madrid, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Santos-Briz
authors.forename: José Luis
authors.initials: JL
authors.lastname: Rodríguez-Peralto
authors.forename: Ana
authors.initials: A
authors.lastname: Miguélez
authors.forename: Fernando
authors.initials: F
authors.lastname: López-Ríos
mesh_terms: D018250:Acrospiroma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D000368:Aged; D003937:Diagnosis, Differential; D006201:Hair Diseases / Q000150:complications / Q000473:pathology*; D018859:Hair Follicle / Q000473:pathology*; D006222:Hamartoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D006801:Humans; D017492:Keratosis, Seborrheic / Q000473:pathology; D008297:Male; D012626:Sebaceous Gland Neoplasms / Q000473:pathology* / Q000601:surgery