title: [Histologic variation in the width of trichoepitheliomas].
abstract: Our histopathological study deals with the evaluation of 232 solitary or multiple trichoepitheliomas, which have been examined by means of hematoxylin-eosin staining. The characteristic features of these benign adnexal tumors have been described with special emphasis on changes of the surrounding stroma. We found a great variation with regard to the size and number of cysts, the maturity of the epithelium and surrounding stroma, as well as the amount of affected stroma. In some cases, a clear separation between trichoepithelioma and keratinizing basal cell epithelioma was not possible.
mesh_terms: D003238:Connective Tissue / Q000473:pathology; D003560:Cysts / Q000473:pathology; D003937:Diagnosis, Differential; D004848:Epithelium / Q000473:pathology; D005549:Foreign-Body Reaction / Q000473:pathology; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000235:genetics / Q000473:pathology*; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000235:genetics / Q000473:pathology*
vernacular_title: Histologische Variationsbreite der Trichoepitheliome.