title: Atypical dermoscopic presentation of an acral congenital melanocytic nevus in an adult: parallel ridge pattern and its histologic correlation.
abstract: Acral melanoma is the most frequent subtype in the Asian and Mexican mestizo populations. Dermoscopy is a noninvasive diagnostic technique that helps the differential diagnosis of pigmented skin lesions on acral volar skin. We, herein, present a case of acral congenital melanocytic nevus with a parallel ridge dermoscopic pattern. Since the parallel ridge pattern in a melanocytic lesion of the acral skin is classically ascribed to melanoma, the present case can be definitely labeled as "atypical" and worth of being elucidated in its histopathological correlates.
authors.affiliation: Faculty of Medicine, "Universidad Nacional Autónoma de México", Mexico City, Mexico ; Dermatology Department, Hospital General "Dr. Manuel Gea González", Mexico City, Mexico.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Roldán-Marín
authors.affiliation: Dermatology Department, Hospital General "Dr. Manuel Gea González", Mexico City, Mexico.
authors.forename: Ana Cecilia
authors.initials: AC
authors.lastname: González-de-Cossío-Hernández
authors.affiliation: Dermatology Department, Hospital General "Dr. Manuel Gea González", Mexico City, Mexico.
authors.forename: Lorena
authors.initials: L
authors.lastname: Lammoglia-Ordiales
authors.affiliation: Dermatopathology, Dermatology Department, Hospital General "Dr. Manuel Gea González", Mexico City, Mexico.
authors.forename: Eduwiges
authors.initials: E
authors.lastname: Martínez-Luna
authors.affiliation: Dermatopathology, Dermatology Department, Hospital General "Dr. Manuel Gea González", Mexico City, Mexico.
authors.forename: Sonia
authors.initials: S
authors.lastname: Toussaint-Caire
authors.affiliation: Dermatopathology, Anatomic Pathology Unit, Gaetano Rummo General Hospital, Benevento, Italy.
authors.forename: Gerardo
authors.initials: G
authors.lastname: Ferrara
keywords: acral; congenital; dermoscopy; histopathology; nevi