title: Dermoscopy of a plantar combined blue nevus: a simulator of melanoma.
abstract: Dermoscopy allows early detection of melanoma also on acral volar skin. The majority of melanocytic nevi on palms and soles may show three major dermoscopic patterns: the parallel-furrow pattern, the lattice-like pattern, and the fibrillar pattern. Melanomas at these sites are characterized by the parallel ridge pattern. We present the case of a 59-year-old woman who had an oval papule of bluish color, measuring 0.6 x 0.9 cm, localized on her left sole, that had been present, unchanged, for more than 10 years. Dermoscopy showed a parallel ridge pattern. The histopathological examination revealed a combined blue nevus. We present this case to underline that on acral volar skin also intradermal nevi, such as combined blue nevi, may dermoscopically exhibit a parallel ridge pattern, simulating melanoma.
authors.affiliation: Department of Dermatology, University of Rome La Sapienza, Rome, Italy. ilcapo75@gmx.net
authors.forename: V
authors.initials: V
authors.lastname: Panasiti
authors.forename: V
authors.initials: V
authors.lastname: Devirgiliis
authors.forename: R G
authors.initials: RG
authors.lastname: Borroni
authors.forename: M
authors.initials: M
authors.lastname: Mancini
authors.forename: M
authors.initials: M
authors.lastname: Rossi
authors.forename: M
authors.initials: M
authors.lastname: Curzio
authors.forename: B
authors.initials: B
authors.lastname: Mastrecchia
authors.forename: U
authors.initials: U
authors.lastname: Bottoni
authors.forename: D
authors.initials: D
authors.lastname: Innocenzi
authors.forename: S
authors.initials: S
authors.lastname: Calvieri
mesh_terms: D046169:Dermoscopy; D003937:Diagnosis, Differential; D005260:Female; D005534:Foot Diseases / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008545:Melanoma / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged; D018329:Nevus, Blue / Q000175:diagnosis / Q000473:pathology*; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology*