title: Recurrent Multiple Squamous Cell Carcinomas on the Scalp in a Patient with Juvenile Dermatomyositis.
abstract: Both long-term administration of immunosuppressive agents and chronic inflammatory conditions, such as autoimmune disease, could be risk factors for the development of cutaneous squamous cell carcinoma (cSCC). In this report, we present a case of recurrent multiple cSCC on the scalp in a patient with juvenile dermatomyositis who had been administered cyclosporine and Predonine since she was a 1-year-old infant. Interestingly, immunohistochemical staining revealed IL-17-producing cells adjacent to IL-17R-expressing atypical keratinocytes. Our present case suggested that IL-17/IL-17R signaling might contribute to the carcinogenesis of cSCC.
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Yota
authors.initials: Y
authors.lastname: Sato
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Taku
authors.initials: T
authors.lastname: Fujimura
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Yumi
authors.initials: Y
authors.lastname: Kambayashi
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Tsukada
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Takanori
authors.initials: T
authors.lastname: Hidaka
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Kayo
authors.initials: K
authors.lastname: Tanita
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Haga
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Hashimoto
authors.affiliation: Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Setsuya
authors.initials: S
authors.lastname: Aiba
keywords: Carcinogenesis; Cutaneous squamous cell carcinoma; IL-17/IL-17R; Signaling