Dermoscopic Characteristics of Acquired Melanocytic Naevus in Childhood Affecting the Acral Region

Abstract

Dermoscopic findings in melanocytic naevus show characteristic patterns depending on age of onset and location (1, 2), On the trunk and extremities, a globular pattern is characteristic in both acquired melanocytic naevus (AMN) of childhood and in small-sized congenital melanocytic naevus (CMN), whereas a reticular pattern is common in melanocytic naevus in adulthood. Individual AMN on the back rarely change their dermoscopic patterns during adolescence (3) but the situation for AMN of the acral region has not been fully explored. We report here the results of dermoscopic analysis of acral AMN in children. MATERIAES AND METHODSWe retrospectively examined the dermoscopic features of AMN located on acral volar skin in patients aged <10 years who visited the

Age-Related Prevalence of Dermoscopic Patterns in Acquired Melanocytic Nevus on Acral Volar Skin

“…These data included previously reported 56 lesions of AMN. 3 We collected lesions presenting at least 4 months after birth to exclude lesions that we previously reported as congenital melanocytic nevus (CMN). 4 Cases were divided into 4 groups according to age at the time of first visit: younger than 20 years, 20 to 39 years, 40 to 59 years, and older than 59 years.…”

“…5 In the peas-in-a-pod pattern, dots on the ridges were histopathologically correlated with eliminated nevus cell nests in some cases. 3 Further histopathological examination is essential to reveal the mechanism of age-related dermoscopic pattern as well as age-unrelated pattern. In addition, the frequency of the latticelike pattern was relatively low in this series.…”