title: Trichoblastoma with rippled-pattern.
abstract: The following is a case study of a 36-year-old Japanese man with a trichoblastoma which exhibited a rippled-pattern on the left temporal region of the scalp. The histological findings of the tumor revealed lobular aggregations composed of immature follicular basaloid cells, lobules of squamous eddy-like foci of incomplete keratinization or small keratinous cysts, and multiple papillary mesenchymal bodies similar to hair germ. Interestingly, a rippled-pattern of basaloid cells and hyalinized matrixes resembling the Verocay bodies of neurilemmoma was also observed. We propose that the rippled-pattern of the basaloid cells and hyalinized matrices is caused by the characteristic stromal induction of trichoblastoma.
authors.affiliation: Department of Dermatology, School of Medicine, Iwate Medical University, Morioka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Akasaka
authors.forename: Y
authors.initials: Y
authors.lastname: Imamura
authors.forename: Y
authors.initials: Y
authors.lastname: Mori
authors.forename: M
authors.initials: M
authors.lastname: Iwasaki
authors.forename: S
authors.initials: S
authors.lastname: Kon
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D018295:Neoplasms, Basal Cell / Q000473:pathology*; D012535:Scalp; D012878:Skin Neoplasms / Q000473:pathology*