title: Multiple trichoepitheliomas in the lines of Blaschko.
abstract: We report a unique occurrence of linear multiple trichoepitheliomas that follow Blaschko lines on the face of an otherwise healthy 8-year-old African American girl. Per the mother, the lesions had been present since birth. The diagnosis was made based on the histologic presence of palisading basaloid cells surrounding central areas of follicular differentiation and papillary mesenchymal bodies. To the authors' best knowledge, this is the first report of linear multiple trichoepitheliomas following the lines of embryologic cutaneous cell development, and possibly, the first of congenital multiple trichoepitheliomas.
authors.affiliation: Department of Internal Medicine at the University of Texas Health Sciences Center, Galveston, 77555, USA.
authors.forename: Yuchi Connie
authors.initials: YC
authors.lastname: Chang
authors.forename: Maria
authors.initials: M
authors.lastname: Colome-Grimmer
authors.forename: Erica
authors.initials: E
authors.lastname: Kelly
mesh_terms: D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005153:Facial Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D012867:Skin / Q000473:pathology*