title: Dermoscopic Features of Pigmented Bowen's Disease in a Japanese Female Mimicking Malignant Melanoma.
abstract: Various structures have been reported for dermoscopic features of pigmented Bowen's disease (BD), which could be a mimic of various pigmented skin lesions. A 79-year-old Japanese woman presented with a 3-year history of brown-black macule on her right upper arm without symptom. Dermoscopic examination demonstrated irregular flossy streaks, irregular brown dots/globules, blue-whitish regression structures, and overlaying whitish scaly areas. We suspected pigmented skin lesions including seborrheic keratosis, pigmented eccrine poroma, and malignant melanoma and excised completely with a 5 mm margin. Histopathological features were consistent with a diagnosis of pigmented BD. Although similar dermoscopic features might be revealed in pigmented skin lesions and it may occasionally be difficult to distinguish between pigmented BD and other pigmented skin lesions, dermoscopy would be useful in speculating pathologic features of pigmented BD.
authors.affiliation: Department of Dermatology, Tokyo Women's Medical University Medical Center East, 2-1-10, Nishi-Ogu, Arakawa-ku,Tokyo 116-8567, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Inoue
authors.forename: Ken
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Mizuki
authors.initials: M
authors.lastname: Sawada
authors.forename: Sumiko
authors.initials: S
authors.lastname: Ishizaki
authors.forename: Haruo
authors.initials: H
authors.lastname: Ito
authors.forename: Mariko
authors.initials: M
authors.lastname: Fujibayashi
authors.forename: Masaru
authors.initials: M
authors.lastname: Tanaka
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