title: Development of poorly differentiated invasive squamous cell carcinoma in giant Bowen's disease: a case report with dermatoscopy.
abstract: Bowen's disease (BD) is an in situ form of squamous cell carcinoma (SCC), often occurring in the chronically UV-damaged skin of elderly people. The risk of progression of BD to invasive SCC varies between 3% and 5%, and one-third of invasive tumors may metastasize. Herein we discuss the dermatoscopic findings of a case of giant Bowen's disease, which progressed to poorly differentiated invasive SCC.
authors.affiliation: Ankara University Faculty of Medicine, Department of Dermatology, Ankara, Turkey.
authors.forename: Bengu Nisa
authors.initials: BN
authors.lastname: Akay
authors.affiliation: Ankara University Faculty of Medicine, Department of Dermatology, Ankara, Turkey.
authors.forename: Aysenur
authors.initials: A
authors.lastname: Maden
authors.affiliation: Kutahya Evliya Celebi State Hospital, Department of Dermatology, Kutahya, Turkey.
authors.forename: Oguzhan
authors.initials: O
authors.lastname: Kocak
authors.affiliation: Ankara University Faculty of Medicine, Department of Dermatology, Ankara, Turkey.
authors.forename: Seher
authors.initials: S
authors.lastname: Bostanci
authors.affiliation: Ankara University Faculty of Medicine, Department of Dermatology, Ankara, Turkey.
authors.forename: Ayşe
authors.initials: A
authors.lastname: Boyvat
authors.affiliation: Ankara University Faculty of Medicine, Department of Dermatology, Ankara, Turkey.
authors.forename: Pelin
authors.initials: P
authors.lastname: Kocyigit
authors.affiliation: Ankara University Faculty of Medicine, Department of Pathology, Ankara, Turkey.
authors.forename: Aylin Okcu
authors.initials: AO
authors.lastname: Heper
keywords: Bowen’s disease squamous cell carcinoma; dermatoscopy; dermoscopy