title: A case of nodular subungual melanoma without Hutchinson's nail sign.
abstract: An early and accurate diagnosis is critical for the optimal management of subungual melanoma; the absence of Hutchinson's nail sign makes an accurate diagnosis extremely difficult. Previous publications show that most subungual melanomas have Hutchinson's nail sign. In this report, we present a rare case of a subungual melanoma without Hutchinson's nail sign and discuss the importance of cautious evaluations of Hutchinson's nail sign by dermoscopy.
authors.affiliation: Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Kohei
authors.initials: K
authors.lastname: Nojima
authors.affiliation: Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Namiki
authors.affiliation: Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Shown
authors.initials: S
authors.lastname: Tokoro
authors.affiliation: Department of Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Miura
authors.affiliation: Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Hiroo
authors.initials: H
authors.lastname: Yokozeki
mesh_terms: D000368:Aged; D046169:Dermoscopy; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008545:Melanoma / Q000000981:diagnostic imaging* / Q000473:pathology; D009260:Nail Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D012878:Skin Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology
keywords: Hutchinson's nail sign; dermoscopy; diagnosis; melanoma; nodular; subungual