title: [ Pilar sheath acanthoma - a benign follicular hamartoma].
abstract: A new case of pilar sheath acanthoma is reported. This tumor has been identified in 1978 and shows characteristic histological features: a central sinus with keratinous material, a pore-like opening to the surface, keratinization of the epidermoid type and projecting epithelial tumor lobes containing small keratin cysts resembling incomplete pilar differentiation.
mesh_terms: D000368:Aged; D004814:Epidermal Cyst / Q000473:pathology; D005546:Forehead; D006801:Humans; D010212:Papilloma / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*
vernacular_title: Das "Pilar Sheath Acanthoma"--ein gutartiges follikuläres Hamartom.